Appendix N — IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR SCALDING AND LEGIONELLA…

(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

2022 CALIFORNIA PLUMBING CODE 511

512 2022 CALIFORNIA PLUMBING CODE

APPENDIX N

IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR SCALDING

AND LEGIONELLA GROWTH The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

N 101.0 General. N 101.1 Applicability. This appendix provides guidelines on the impact of water temperature in minimizing both scalding and Legionella growth potential associated with occupiable commercial, institutional, multi-unit residential, and industrial building plumbing systems.

This appendix shall not include single-family residential buildings. This appendix shall not be considered a risk management guidance document for scalding or Legionella. Note: Published documents which address Legionella risk management include ASHRAE 188, ASHRAE Guideline 12, or as required by the Authority Having Jurisdiction.

There are additional factors associated with the potential for scalding and Legionella growth other than temperature.

For scalding potential, other factors include, but are not limited to, user age, health, body part, length of contact time, and water source.

For Legionella growth potential other factors include, but are not limited to, water source and plumbing system: size, design, circulation rate, water age, disinfectant residual, piping material and component complexity.

N 102.0 Definitions. N 102.1 Cold Water. Water at a temperature less than 77°F (25°C). N 102.2 Tepid Cold Water. Water at a temperature not less than 77°F (25°C) and less than 85°F (29°C). N 102.3 Tepid Water. Water at a temperature not less than 85°F (29°C) and less than 110°F (43°C). N 102.4 Warm Water. Water at a temperature not less than 110°F (43°C) and less than 120°F (49°C). N 102.5 Tempered Hot Water. Water at a temperature not less than 120°F (49°C) and less than 130°F (54°C). N 102.6 Hot Water. Water at a temperature not less than 130°F (54°C) and less than 140°F (60°C). N 102.7 Very Hot Water. Water at a temperature not less than 140°F (60°C) and less than 160°F (71°C). N 102.8 Disinfecting Hot Water. Water at a temperature not less than 160°F (71°C). N 102.9 Legionella Growth Potential. The likelihood that Legionella bacteria will reproduce. N 102.10 Scald Potential. The likelihood of burning the skin.

N 103.0 Building Water System Design Documenta- tion. N 103.1 Required Documentation. Construction documents shall be required for new construction, renovation,

refurbishment, replacement, or repurposing of an occupiable building water system and shall be submitted to the Authority Having Jurisdiction.

N 104.0 Potential Exposure. N 104.1 Legionella Growth Potential. The Authority Having Jurisdiction shall have the authority to require documentation to address Legionella growth potential, where water temperatures in a water distribution system are within ranges shown in Table N 104.1 that pose a Legionella growth potential. N 104.2 Scald Potential. Where the water distribution system’s water temperature(s) range poses a scald potential in accordance with Table N 104.1, protection shall be provided in accordance with Chapter 4.

N 105.0 Disinfection. N 105.1 Disinfection Documentation. Where required by the Authority Having Jurisdiction, documentation for disinfection of all building water systems shall be provided by the registered design professional in the construction documents.

Methods for new construction and any repaired system disinfection shall include, but not be limited to, the chlorination methods and procedures for flushing and disinfection in accordance with Section 609.10.

Other or alternative water treatment methods for disinfection shall include, but not be limited to, one of the following methods: (1) Copper-silver ionization methods and procedures,

including the following documentation. (a) Copper and silver ionization concentrations shall be

included in the documentation. (b) Methods and documentation for monitoring ion lev els. (c) Electrode cleaning cycles and methods shall be

reported. (2) Ultraviolet light methods shall include the following doc umentation: (a) Locations of ultraviolet light units. (b) Cleaning cycles and methods of the quartz sleeves

and housing shall be documented.

2022 CALIFORNIA PLUMBING CODE 513

APPENDIX N

TABLE N 104.1 CORRELATION BETWEEN TEMPERATURE RANGES, LEGIONELLA, AND SCALD POTENTIAL

For SI units: °C = (°F-32)/1.8 Notes: 1 The infant, elderly, and infirmed have a higher potential for scalding at temperatures lower than listed. 2 Temperature ranges reported are experimentally determined in a laboratory setting in the absence of a realistic microbial community. Legionella can survive for longer periods of time at temperatures higher and lower than the growth temperature ranges indicated due to changes in their metabolic state and/or protection from thermal disinfection within biofilm or amoeba host organisms.

514 2022 CALIFORNIA PLUMBING CODE

USEFUL TABLES

CONVERSION TABLES

Note: The information contained in these tables are not part of this American National Standard (ANS) and have not been processed in accordance with ANSI’s requirements for an ANS. As such, these tables may contain material that has not been subjected to public review or a consensus process. In addition, they do not contain requirements necessary for conformance to the standard.

UNIT CONVERSIONS

MULTIPLY BY TO OBTAIN

Acres.........................................................................43 560 ............................Square feet (ft ² ) Acre-feet...................................................................43 560 ............................Cubic feet (ft ³ ) Acre-feet.................................................................325 851 ............................Gallons (U. S. liquid) Atmosphere (atm)........................................................76.0 ............................Centimeters of mercury (0°C) Atmosphere (standard) (atm)........................................76.0 ............................Centimeters of mercury (0°C) Atmosphere (standard) (atm)......................................33.90 ............................Feet of water (4°C) Atmosphere (standard) (atm)......................................29.92 ............................Inches of mercury Atmosphere (standard) (atm)..............................101.32501 ............................Kilopascals (kPa) Atmosphere (standard) (atm)......................................14.70 ............................Pounds-force/square inch (lbf/in ² ) Barrels..............................................................................42 ............................Gallons (gal) Barrels...................................................................158.9873 ............................Liters (L) British thermal units (Btu)....................................1055.055 ............................Joules (J) British thermal units/hour (Btu/h) ........................0.000293 ............................Kilowatts (kW) British thermal units/hour (Btu/h) ..............................0.293 ............................Watts (W) British thermal unit hour (Btu/h)..........................1.055056 ............................Kilojoules (kJ) British thermal unit hour (Btu/h)..........................1055.056 ............................Joule (J) British thermal units/minute (Btu/min) ......................12.97 ............................Foot pounds-force/second (ft•lbf/s) British thermal units/minute (Btu/min) ..................0.02358 ............................Horsepower (hp) (international) British thermal unit per hour square

foot degree Fahrenheit [Btu/(h•ft ² •°F)] .............5.678263 ............................Watt per square meter kelvin [W/(m ² •K)] British thermal unit inch per hour

foot degree Fahrenheit [Btu•in/(h•ft•°F)] ......0.14442279 ............................Watt per meter kelvin [W/(m•K)] Candelas per square inch (cd/in ² )................1.550003 x 10 ³ ............................Candela per square meters (cd/m ² ) Celsius (°C)......................................................°C + 273.15 ............................Kelvin (k) Celsius (°C)....................................................1.8 x °C + 32 ............................Fahrenheit (°F) Centimeters (cm) ......................................................0.3937 ............................Inches (in) Centimeters of mercury (0°C) ................................0.01316 ............................Atmosphere (standard) Centimeters of mercury (0°C) ....................................0.446 ............................Feet of water (4°C) Centimeters of mercury (0°C) ....................................27.84 ............................Pounds-force/square feet (lbf/ft ² ) Centimeters of mercury (0°C) ..................................0.1934 ............................Pounds-force/square inch (lbf/in ² ) Circumference ............................................................6.283 ............................Radians (rad) Cubic feet (ft ³ ) .............................................................1728 ............................Cubic inches (in ³ ) Cubic feet (ft ³ ) ..........................................................0.0283 ............................Cubic meters (m ³ ) Cubic feet (ft ³ ) ........................................................0.03704 ............................Cubic yards (yd ³ ) Cubic feet (ft ³ ) ........................................................7.48052 ............................Gallons (U.S. liquid) (gal) Cubic feet (ft ³ ) ............................................................28.32 ............................Liters (L) Cubic feet (ft ³ ) ............................................................29.92 ............................Quarts (U.S. liquid) Cubic feet/hour (ft ³ /h)...............................................0.0283 ............................Cubic meters/hour (m ³ /h)

2022 CALIFORNIA PLUMBING CODE 515

USEFUL TABLES

UNIT CONVERSIONS (continued)

MULTIPLY BY TO OBTAIN

Cubic feet/minute (ft ³ /min)..................................0.000472 ............................Cubic meters/second (m ³ /s) Cubic feet/minute (ft ³ /min)......................................0.1247 ............................Gallons/second Cubic feet/minute (ft ³ /min)....................................0.47194 ............................Liters/second (L/s) Cubic feet/second (ft ³ /s) ....................................646 316.89 ............................Gallons/day Cubic feet/second (ft ³ /s) .........................................448.831 ............................Gallons/minute (gpm) Cubic inches (in ³ )...............................................1.64 x 10 ^-5 ............................Cubic meters (m ³ ) Cubic inches (in ³ ) ...................................................0.01639 ............................Liters (L) Cubic meters (m ³ ).....................................................264.17 ............................Gallons (U.S. liquid) Cubic yards (yd ³ ).............................................................27 ............................Cubic feet (ft ³ ) Cubic yards (yd ³ )....................................................0.76455 ............................Cubic meters (m ³ ) Cubic yards (yd ³ )......................................................201.97 ............................Gallons (U.S. liquid) Degrees (deg)............................................................0.0174 ............................Radians (rad) Fahrenheit (°F)...................................................(°F-32)/1.8 ............................Celsius (°C) Feet (ft) .....................................................................0.3048 ............................Meters (m) Feet (ft) .......................................................................304.8 ............................Millimeters (mm) Feet of water (4°C)...................................................0.0295 ............................Atmosphere (standard) (atm) Feet of water (4°C)...................................................0.8827 ............................Inches of mercury (0°C) Feet of water (4°C).....................................................62.43 ............................Pounds-force/square feet Feet of water (4°C)...................................................0.4335 ............................Pounds-force/square inch Feet/minute (ft/min)................................................0.01667 ............................Feet/second (ft/s) Feet/minute (ft/min)................................................0.01136 ............................Miles/hour (mi/h) Feet/second (ft/s) ......................................................0.3048 ............................Meters/second (m/s) Feet/second (ft/s) ......................................................0.6818 ............................Miles/hour (mi/h) Feet/second (ft/s) ....................................................0.01136 ............................Miles/minute (mi/min) Foot lambert (fL) ..................................................3.426259 ............................Candela per square meter (cd/m ² ) Foot pounds-force (ft•lbf)...........................................1.355 ............................Joules (J) Foot pounds-force/minute (ft•lbf/min).............2.260 x 10 ^-5 ............................Kilowatts (kW) Foot pounds-force/second (ft•lbf/s)..................1.356 x 10 ^-3 ............................Kilowatts (kW) Gallons (U.S. liquid) (gal).............................................231 ............................Cubic inches (in ³ ) Gallons (U.S. liquid) (gal)....................................0.003785 ............................Cubic meters (m ³ ) Gallons (U.S. liquid) (gal)........................................0.1337 ............................Cubic feet (ft ³ ) Gallons (U.S. liquid) (gal)..........................................3.785 ............................Liters (L) Gallons (U.S. liquid) (gal).................................................4 ............................Quarts (U.S. liquid) Gallons/day...........................................................4.3 x 10 ^-5 ............................Liters/second Gallons/minute (gal/min) (gpm)...............................8.0208 ............................Cubic feet/hour (ft ³ /h) Gallons/minute (gal/min) (gpm).....................0.003785412 ............................Cubic meters/minute (m ³ /min) Gallons/minute (gal/min) (gpm).............................0.00223 ............................Cubic feet/second (ft ³ /s) Gallons/minute (gal/min) (gpm).................6.309020 x 10 ^-5 ............................Cubic meters/second (m ³ /s) Gallons/minute (gal/min) (gpm).............................0.06309 ............................Liters/second (L/s) Grains (gr) ........................................................0.00006479 ............................Kilograms (kg) Horsepower (hp).......................................................0.7457 ............................Kilowatts (kW) Horsepower-hours............................................2.684 x 10 ⁺⁶ ............................Joules (J) Horsepower-hours ....................................................0.7457 ............................Kilowatt-hours (kW•h) Inch (water column at 60°F)...................................0.24884 ............................Kilopascals (kPa) Inches (in).....................................................................2.54 ............................Centimeters (cm)

..................Joules (J) Horsepower-hours ....................................................0.7457 ............................Kilowatt-hours (kW•h) Inch (water column at 60°F)...................................0.24884 ............................Kilopascals (kPa) Inches (in).....................................................................2.54 ............................Centimeters (cm)

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USEFUL TABLES

UNIT CONVERSIONS (continued)

MULTIPLY BY TO OBTAIN

Inches (in).....................................................................25.4 ............................Millimeters (mm) Inches/hour ...................................................................25.4 ............................Millimeters/hour (mm/h) Inches of mercury (0°C).........................................0.03342 ............................Atmosphere (standard) (atm) Inches of mercury (0°C).............................................1.133 ............................Feet of water (4°C) Inches mercury (0°C) ...............................................3.3863 ............................Kilopascals (kPa) Inches of mercury (0°C)...........................................0.4912 ............................Pounds-force/square inch Inches of water (4°C)............................................0.002458 ............................Atmosphere (standard) (atm) Inches of water (4°C)..............................................0.07356 ............................Inches of mercury (0°C) Inches of water (4°C)..................................................5.202 ............................Pounds-force/square feet Inches of water (4°C)..............................................0.03613 ............................Pounds-force/square inch Joules (J)...........................................................9.480 x 10 ^-4 ............................British thermal units (Btus) Joules (J)...................................................................0.7376 ............................Foot-pounds Joules (J)...........................................................2.778 x 10 ^-4 ............................Watt-hours Kelvin (K).........................................................°K - 273.15 ............................Celsius (°C) Kilograms (kg)..........................................................2.2046 ............................Pounds (lbs) Kilograms (kg) .................................................1.102 x 10 ^-3 ............................Tons (short) Kilopascals (kPa)..................................................0.145038 ............................Pounds-force/square inch Kilometers (km)........................................................0.6214 ............................Miles (statute) Kilometers/hour (km/h)............................................0.6214 ............................Miles/hour (mi/h) Kilowatts (kW) .......................................................3412.14 ............................British thermal units/hour (Btus/hour) Kilowatts (kW) ...........................................................1.341 ............................Horsepower (hp) Kilowatt-hours.............................................................3413 ............................British thermal units (Btus) Kilowatt-hours.................................................2.655 x 10 ⁺⁶ ............................Foot-pounds (ft•lbs) Kilowatt-hours.....................................................3.6 x 10 ⁺⁶ ............................Joules (J) Kip (1000 lbf).......................................................4.448222 ............................Kilonewtons (kN) Kip-foot ..................................................................1.35671 ............................Kilonewton meters (kN•m) Kips per square inch (kip/in ² )...................................6.8947 ............................Megapascals (MPa) Lambert (la).................................................3.183099 x 10 ³ ............................Candela per square meter (cd/m ² ) Liters (L).................................................................0.03531 ............................Cubic feet (ft ³ ) Liters (L).....................................................................61.02 ............................Cubic inches (in ³ ) Liters (L).....................................................................0.001 ............................Cubic meters (m ³ ) Liters (L)...................................................................0.2642 ............................Gallons (U.S. liquid) Lumens per square foot (lm/ft ² ) (footcandle).......10.76391 ............................Lux (lx) Meters (m) ..................................................................3.281 ............................Feet (ft) Meters (m) ..................................................................39.37 ............................Inches (in) Meters (m) ..................................................................1.094 ............................Yards Meters/second (m/s) ...................................................3.281 ............................Feet/second (ft/s) Meters/second (m/s) ...................................................2.237 ............................Miles/hour (mi/h) Miles (mi) ....................................................................5280 ............................Feet (ft) Miles (statute).............................................................1.609 ............................Kilometers (km) Miles/hour (mi/h).............................................................88 ............................Feet/minute (ft/min) Miles/hour (mi/h)........................................................1.467 ............................Feet/second (ft/s) Miles/hour (mi/h)..................................................1.609344 ............................Kilometers/hour (km/h) Miles/hour (mi/h)........................................................26.82 ............................Meters/minute (m/min) Miles/hour (mi/h)....................................................0.44704 ............................Meters/second (m/s)

.Feet/second (ft/s) Miles/hour (mi/h)..................................................1.609344 ............................Kilometers/hour (km/h) Miles/hour (mi/h)........................................................26.82 ............................Meters/minute (m/min) Miles/hour (mi/h)....................................................0.44704 ............................Meters/second (m/s)

2022 CALIFORNIA PLUMBING CODE 517

USEFUL TABLES

UNIT CONVERSIONS (continued)

MULTIPLY BY TO OBTAIN

Millimeters (mm)............................................................0.1 ............................Centimeters (cm) Millimeters (mm)....................................................0.03937 ............................Inches (in) Millimeters (mm)........................................................0.001 ............................Meters (m) Minutes (min).............................................2.908882 x 10 ^-4 ............................Radians (rads) Ounces/square inch (oz/in ² )..................................43.94185 ............................Kilograms/square meter (kg/m ² )

Millimeters (mm)........................................................0.001 ............................Meters (m) Minutes (min).............................................2.908882 x 10 ^-4 ............................Radians (rads) Ounces/square inch (oz/in ² )..................................43.94185 ............................Kilograms/square meter (kg/m ² )

Ounces/square feet (oz/ft ² ) ...............................0.03051517 ............................Kilograms/square meter (kg/m ² ) Ounces (oz).............................................................0.02834 ............................Kilograms (kg) Ounces (oz)...........................................................29.57353 ............................Millimeters (mL) Pints....................................................................0.4731765 ............................Liters (L) Pound-force feet (lbf•ft) .......................................1.355818 ............................Newton meters (N•m) Pound-force inch (lbf•in)....................................0.1129848 ............................Newton meters (N•m) Pound-force per foot (lbf/ft) ...................................14.5939 ............................Newton meters (N•m) Pound-force per square foot (lbf/ft ² ) ....................47.88026 ............................Pascal (Pa) Pound-force per square inch (lbf/in ² ) .....................6.89476 ............................Kilopascals (kPa) Pound-force per inch (lbf/in)................................175.1268 ............................Newton meters (N•m) Pounds/cubic inch (lb/in ³ )...........................2.767990 x 10 ⁴ ............................Kilograms/cubic meter (kg/m ³ ) Pounds/cubic yard (lb/yd ³ ) .................................0.5932764 ............................Kilograms/cubic meter (kg/m ³ ) Pounds (lb)..............................................................0.45359 ............................Kilograms (kg) Pounds/cubic foot (lb/ft ³ ) .......................................16.0184 ............................Kilograms/cubic meter (kg/m ³ ) Pounds/foot (lb/ft) ....................................................1.4881 ............................Kilograms/meters (kg/m) Pounds/square inch (lb/in ² ).........................................703.1 ............................Kilograms-force/square meter (kg/m ² ) Pounds/square foot (lb/ft ² )....................................4.882427 ............................Kilograms-force/square meter (kg/m ² ) Pounds-force (lbf).....................................................4.4482 ............................Newtons (N) Pounds-force/square inch (psi)...............................0.06805 ............................Atmosphere (standard) (atm) Pounds-force/square inch (psi)...................................2.307 ............................Feet of water (4°C) Pounds-force/square inch (psi)...................................2.036 ............................Inches of mercury (0°C) Pounds-force/square inch (psi)...............................6.89476 ............................Kilopascals (kPa) Quarts (U.S. dry) (dry qt) ...........................................67.20 ............................Cubic inches (in ³ ) Quarts (U.S. liquid) (liq qt) ........................................57.75 ............................Cubic inches (in ³ ) Quarts (liquid) ....................................................0.9463529 ............................Liters (L) Radians (rads).............................................................57.30 ............................Degrees (deg) Seconds (s) ..................................................4.848137 x10 ^-6 ............................Radians (rads) Square acre ...........................................................0.404687 ............................Square kilometers (km ² ) Square feet (ft ² )..............................................................144 ............................Square inches (in ² ) Square feet (ft ² ).........................................................0.0929 ............................Square meters (m ² ) Square inches (in ² )....................................................645.16 ............................Square millimeters (mm ² ) Square inches (in ² )................................................0.000645 ............................Square meters (m ² ) Square meters (m ² ) ......................................................1550 ............................Square inches (in ² ) Square miles (mi ² ) .........................................................640 ............................Acres Square miles (mi ² ) ................................................2.589988 ............................Square kilometers (km ² ) Square millimeters (mm ² ) ................................1.550 x 10 ^-3 ............................Square inches (in ² ) Square yards (yd ² ) .............................................................9 ............................Square feet (ft ² ) Square yards (yd ² ) ..............................................0.8361274 ............................Square meters (m ³ ) Temperature (°C) + 17.28 ..............................................1.8 ............................Temperature (°F) Temperature (°F) – 32 ....................................................5 ⁄ 9 ............................Temperature (°C)

/sup> ) Square yards (yd ² ) ..............................................0.8361274 ............................Square meters (m ³ ) Temperature (°C) + 17.28 ..............................................1.8 ............................Temperature (°F) Temperature (°F) – 32 ....................................................5 ⁄ 9 ............................Temperature (°C)

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USEFUL TABLES

UNIT CONVERSIONS (continued)

MULTIPLY BY TO OBTAIN

Ton-force (tonf) (2000 lbf)...................................8.896443 ............................Kilonewtons (kN) Ton-force foot (tonf•f/ft) ........................................2.71342 ............................Kilonewton meters (kN•m) Ton-force per square foot (tonf/ft ² ) ........................95.7605 ............................Kilopascals (kPa) Ton-force per square inch (tonf/in ² ).......................13.7895 ............................Megapascals (MPa) Ton (metric).................................................................1000 ............................Kilograms (kg) Tons (long) (2240 lbs)..........................................1016.047 ............................Kilograms (kg) Tons (short) .................................................................2000 ............................Pounds (lbs) Watts.........................................................................3.4121 ............................British thermal units per hour (Btus/hour) Watts.................................................................1.341 x 10 ^-3 ............................Horsepower (hp) Yards (y)...................................................................0.9144 ............................Meters (m)

2022 CALIFORNIA PLUMBING CODE 519

USEFUL TABLES

FLOW IN GALLONS PER MINUTE CONVERTED TO FIXTURE UNITS FOR

GRAVITY FLUSH TANKS AND FLUSHOMETERS

These tables may be interpolated

520 2022 CALIFORNIA PLUMBING CODE

USEFUL TABLES

AREAS AND CIRCUMFERENCES OF CIRCLES

2022 CALIFORNIA PLUMBING CODE 521

USEFUL TABLES

FRICTION LOSS PER FOOT LENGTH

[SCHEDULE 80 PVC EXCEEDING CHART A105.1(7)]

The following formula should be used for where Schedule 80 IPS CPVC sizes 2½” through 10” exceed Chart A 105.1(7):

Head loss formula: HL = 0.2083 (100/ C ) 1.852 x Q 1.852 / dI 4.8655

Where: HL = frictional head loss (feet of water per 100 feet) C = Hazen-Williams factor (150 for CPVC) Q = flow rate (gal/min) dI = inside diameter of pipe (inches)

Note: head loss in feet of water per 100 feet can be multiplied by 0.4335 to obtain pressure drop in psi

Velocity formula: VW = 0.4085 Q / dI 2

Where: VW = velocity of water (feet per second)

522 2022 CALIFORNIA PLUMBING CODE

USEFUL TABLES

FLOW IN PARTLY FILLED (ONE-HALF FULL) PIPES

(BASED ON MANNING’S FORMULA WITH n = .012)

2022 CALIFORNIA PLUMBING CODE 523

USEFUL TABLES

FLOW IN PARTLY FILLED (FULL) PIPES (BASED ON MANNING’S FORMULA WITH n = .012)

524 2022 CALIFORNIA PLUMBING CODE

INDEX

© 2021 International Association of Plumbing and Mechanical Officials. All rights reserved. The copyright in this index is separate and distinct from the copyright in the document that it indexes. The licensing provisions set forth for the document are not applicable to this index. This index may not be reproduced in whole or in part by any means without the express written permission of IAPMO.

– A – ABANDONED

Grease interceptors . . . . . . . . . . . . . . . . . . . . . .1014.3.7

Sewers and sewage disposal . . . . . . . . .722.0, H 1101.0 ACCESS PANELS . . . . . . . . . . . . . . . . . . . . . .317.1, 402.10 ACCESS TO

Appliances . . . . . . . . . . . . . . . . . . .507.26, 508.3, 508.4

Backwater valves . . . . . . . . . . . . . . . . . .710.6, 1101.6.4,

1503.2.3

Chemical waste system piping . . . . . . . . . . . . . . . .811.4

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . .707.8, 719.5

Drips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1210.7.1

Emergency eyewash and

shower equipment . . . . . . . . . . . . . . . . . . . . . . .416.4

Flexible connectors . . . . . . . . . . . . . . . .604.5, 1212.5.3

Flushometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .413.2

Fuel gas meters . . . . . . . . . . . . . . . .1208.7.1, E 402.4.1

Fuel gas piping . . . . . . . . . . . . . . . .1210.3.3.1, 1210.4.4

Fuel gas pressure regulators . . . . . . .1208.8.2, 1210.5.1

Fullway valves . . . . . . . . . . . . . . . . . . . . . . .606.2, 710.6

Grease interceptors . . . . . . . . . . . . . . . . . . . . . .1014.3.4

Indirect waste receptors . . . . . . . . . . . . . . . . . . . .804.1

Interceptors . . . . . . . . . . . . . . . . . . . . . .1009.3, 1009.5,

1016.4, H 901.5

Lapped flanges . . . . . . . . . . . . . . . . . . . . . .1208.6.12.7

Manholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 501.12

Meters and submeters . . . . . . . . . . . . . . 601.2.1, 601.2.2,

601.2.2.1, L 407.4

Plumbing fixtures . . . . . . . . . . . . . . . . . . . . . . . . . .402.1

Pool heaters on/off switch . . . . . . . . . . . . . .L 503.3.6(1)

Rainwater storage tanks . . . . .1603.6, 1603.8, K 105.3.1

Septic tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 501.5

Shutoff valves . . . . . . . .606.3, 606.6, 1210.9, 1210.9.1,

1210.9.2, 1210.9.4, 1212.5.3,

1212.6, 1327.2, E 403.9,

E 403.13(2), E 403.13(6)

Sumps . . . . . . . . . . . . . . . . . . . . . . . . . . . .710.10, 810.3

Toilet facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . .422.4

Trap seal primers . . . . . . . . . . . . . . . . . . . . . . . . .1007.1

Vacuum pumps . . . . . . . . . . . . . . . . . . . . . . . .C 501.2.1

Vent connectors, fuel gas . . . . . . . . . . . . . . . .509.10.10

Water meters and submeters . . . . . . . 601.2.1, 601.2.2.1,

601.2.2.2, L 407.4

Water pressure regulators and strainers . . . . . . . .608.2

ACCESSIBLE, DEFINITION . . . . . . . . . . . . . . . . . . . .203.0 ACCESSIBLE, READILY, DEFINITION . . . . . . . . . . . .203.0 ACCESSIBLE PLUMBING FACILITIES

For persons with disabilities . . . . . . . . . . . . . . . . .403.2

Protection against contact . . . . . . . . . . . . . . . . . . .403.3

Where required . . . . . . . . . . . . . . . . . . . . . . . . . . .403.1 ACCESSORY DWELLING UNIT, DEFINITION . . . . . . .203.0 ACRYLONITRILE-BUTADIENE-STYRENE

(ABS) PIPE . . . . . . . . . . . . . . . .203.0, Table 313.3, 701.2,

Table 701.2, 705.1

705.9.4, 903.1, 1101.4 AIR GAPS

Backflow prevention . . . . . . 603.2, Table 603.2, 603.3.1,

Table 603.3.1, 603.4.4

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.0

Discharge from drinking

water treatment units . . . . . . . . . . . . . . . . . . . . . 611.2 AIR TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .710.11 ALTERATIONS AND REPAIRS

Fuel gas piping . . . . . . . . . . . .1203.1, 1213.1.2, 1213.4.2

Health care facilities . . . . . . . . . . . . . . . . . . . . . . .1301.5

Plumbing systems . . . . . . . . . . . . . . . . . .102.4, 301.2.5 ALTERNATE MATERIALS, DESIGN,

AND METHODS . . . . . . . . . . . . . . . . . . . . . . . . . . . .301.3 ALTERNATE WATER SOURCE

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203.0

For nonpotable applications . . . . . . . . . . . . .Chapter 15

For special water features . . . . . . . . . . . . . . . . .L 406.1

Future connections . . . . . . . . . . . . . . . . . . . . .1504.9.1

Identification of piping . . . . . . . . . . . . . . . . . . . . .601.3.3

Nonpotable rainwater

catchment system . . . .Table 1601.5, 1602.4, K 102.2 APPLIANCES

Automatically operated . . . . . . . . . . . .509.3.4, 509.5.7.1

Categorized vent

diameter/area, definition . . . . . . . . . . . . . . . . . .203.0

Connections to building

fuel gas piping . . . . . . . . . . . . . . . . . . . . . . . . .1212.0

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203.0

Direct-vent . . . . . . . . . . . . . . . .206.0, 509.2.6, 509.5.10.1,

509.8.2, 509.12

In attics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .508.4

Indirect waste type . . . . . . . . . . . . . . . . . . .806.0, 807.0

In under-floor spaces . . . . . . . . . . . . . . . . . . . . . . .508.4

On roofs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .508.0

2022 CALIFORNIA PLUMBING CODE 525

INDEX

Vent Connectors . . . . . . . . . . . . . . . . . .509.10, 510.2.11

Venting of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.0 APPLICATION FOR PERMIT . . . . . . . . . . . . . . . . . . .104.3 APPROVED, DEFINITION . . . . . . . . . . . . . . . . . . . . . .203.0 APPROVED TESTING

AGENCY, DEFINITION . . . . . . . . . . . . . . . . . . . . . . .203.0 AREA DRAINS . . . . . . . . . . . . . . . . . . . . . . . .203.0, 1101.15 ASBESTOS-CEMENT PIPE . . . . . . . . . . . .Table 510.1.2(5),

Table 510.2(5) ASPIRATORS . . . . . . . . . . . . . . . . . .203.0, 603.5.9, 1303.5 AUTHORITY HAVING JURISDICTION . . . . . . .103.0, 203.0 AUTHORITY TO

Disconnect gas . . . . . . . . . . . . . . . . . . . . . . . . . .1206.0

Plumbing system . . . . . . . . . . . . . . . . . . . . . . . . . .106.5

Render gas service . . . . . . . . . . . . . . . . . . . . . . .1205.0 AUTOMATIC

Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .K 106.2.4

Flushometer valves . . . . . . . . . . . . . . . . . . . . . . . .413.2

Pressure relief valve . . . . . . . . . . . . . . . . . . . . . . .608.4

Pumps . . . . . . . . . . . . . . . . . . . . . . . . . .1017.1, 1101.6.2,

C 501.2.5, H 601.8

Seat cover dispensers . . . . . . . . . . . . . . . . . . . . . .411.3

Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . .420.3, 504.6

Siphon, septic tanks . . . . . . . . . . . . . . . . . . . . . .H 601.8

Sprinkler systems . . . . . . . . . . . . . . . . . . . . . . .603.5.14

Sumps and receiving tanks . . . . . . . . . . . . . . . . . .710.9

Vent dampers, fuel gas . . . . . . . . . . . .509.14, 509.14.1 AUTO WASH RACKS . . . . . . . . . . . . . . . . . . . . . . . . .1011.0

– B – BACKFILLING . . . . . . . . . . . . . . .314.4, 314.4.1, 1210.1.2.1,

1323.5.1, 1323.5.4, 1323.5.5,

H 601.2 BACKFLOW

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.0

Prevention . . . . . . . . . . . . . . . . . . . . . . . . . 602.2, 602.3

Prevention devices

or assembly . . . . . . . . . . . . 603.1, Table 603.2, 603.3 BACKFLOW CONNECTION . . . . . . . . . . . . . . .204.0, 603.0 BACKFLOW PREVENTERS

Approved standards . . . . . . . . . . . . . . . . . . .Table 603.2

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204.0

For hot water . . . . . . . . . . . . . . . . . . . . . . . . . . .603.4.5

Integral . . . . . . . . . . . . . . . . . . . . . . . . . . . .417.2, 417.3,

417.4, 603.4.6

Prohibited locations . . . . . . . . . . . . . . . . . . . . . .603.4.9

Protection from damage . . . . . . . . . . . . . . . . . . .E 302.6

Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.2 BACKFLOW PREVENTION . . . . . . . . . . . . . . .602.3, 603.3 BACK-TO-BACK FIXTURES . . . . . . . . . . . . . . . . . . . .704.2 BACKWATER VALVES

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.0

Where Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710.6 BALLCOCKS . . . . . . . . . . . . . . . . . . . .Table 603.2, 603.5.2 BAPTISTRIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .406.1 BATHROOM, HALF, DEFINITION . . . . . . . . . . . . . . . .204.0 BATHROOM GROUP . . . . . . . . . . . . .204.0, 908.2, C 303.0 BATHTUB, PROHIBITED TYPE . . . . . . . . . . . . . . . . .405.3 BATHTUBS AND

WHIRLPOOL BATHTUBS . . . . . . . . . . . . . . . . . . . .409.0 BIDETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.5, 410.0 BLOWOFF CONDENSERS . . . . . . . . . . .810.1, Table 810.1 BOARD OF APPEALS . . . . . . . . . . . . . . . . . . . . . . . . .107.0 BOILER BLOWOFF

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204.0

Discharge requirements . . . . . . . . . . . . . . . . . . . .810.1 BONDING JUMPER

Bonding of CSST fuel gas piping . . . . . . . . . . . . .1211.2

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204.0 BOTTLING ESTABLISHMENTS . . . . . . . . . . . . . . . .1013.0 BUILDING DRAIN

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204.0

Existing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102.4.1

Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 701.2

Sizing . . . . . . . . . . . . . . . . . .703.0, Table 703.2, 710.5,

C 304.2, Table C 304.2

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .712.0 BUILDING DRAIN (STORM), DEFINITION . . . . . . . . .204.0 BUILDING SEWERS

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204.0

Existing . . . . . . . . . . . . . . . . . . . . . . . . . .102.4.1, 715.3

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .721.0

Material . . . . . . . . . . . . . . . . . .Table 701.2, 715.1, 720.0

Sizing . . . . . . . . . . . . .710.5, 717.0, Table 717.1, C 304.2

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .723.0 BUILDING SUPPLY . . . . . . . . . . . . . . . . . .204.0, Chapter 6 BURRED ENDS . . . . . . . . . . . . . . . . .309.3, 609.1, 701.3.1,

903.3, 1208.6.8, 1321.7.2

– C – CAPACITY OF

Breathing air cylinders . . . . . . . . . . . . . . . . . . . .F 1001.1

Graywater systems . . . . . . . . . . . . . . . . . . . . . .1503.2.1

Interceptors . . . . . . . . . . . . . . . . . . . . . . . . . . . .1014.2.1

Irrigation field and

mulch basin . . . . . . . . . . . . . . . . . . .1503.2.1, 1504.2,

Table 1504.2, 1504.3

Medical air compressors . . . . . . . . . . . .1310.3.1, 1311.2

Rectangular scuppers . . . . . . . . . . . . . . . . . . . .D 104.0

Sewage ejectors or pumps . . . . . . . . . . . . . . . . . .710.3

Sump pump . . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.6.2

Water heaters . . . . . . . . . . . . . . . . . . .501.1, Table 501.1(1) CAST-IRON PIPE

Approved standards . . . . . . . . . . . . . . . . . . . . . .301.2.4

526 2022 CALIFORNIA PLUMBING CODE

Discharge line from ejectors . . . . . . . . . . . . . . . . .710.4

Drainage piping . . . . . . . . . . . . . . . . . . . . . . . . . . .701.2

Fittings . . . . . . . . . . . . . . . . . .301.2.3, 604.6, 1208.6.10.5

Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . .1208.6.12.1

Joining . . . . . . . . . . . . . . . . . . . . . . . . . .705.2, 705.10.1

Prohibited use . . . . . . . . . . . . . . . . . . . .316.1, 1208.6.3 CAULKED JOINTS . . . . . . . . . . . . . . . . . . . . . . . . . .705.2.1 CAULKING FERRULES . . . . . . . . . . . . . .701.6, Table 701.6 CERTIFICATION

Backflow assembly testers . . . . . . . . . . . . .205.0, 603.2

Medical gas or medical

vacuum installers . . . . . . . . . . . . . . . . . . . . . .1323.10

Medical gas or medical

vacuum systems . . . . . . . . . . . . . . . . . . . . . . .1306.0

Pipe welder, definition . . . . . . . . . . . . . . . . . . . . . .225.0 CESSPOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 801.1

Abandoned . . . . . . . . . . . . . . . . . . . . . . .722.0, H 1101.0

Connections to sewer prohibited . . . . . . . . . . . . . .714.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 CHECK VALVES

In drainage systems . . . . . . . . . . . . . . .710.4, 710.12.1,

710.13.2, 1004.2

In firefighter breathing air

replenishment systems . . . . . . . . . . . . . . . . . .F 501.7,

F 601.5.1, F 701.3

In fuel gas systems . . . . . . . . . . . . . . . . . . . . . .1208.8.1

In medical gas and

medical vacuum systems . . . . . . . . .1311.5(2), 1313.5

In water supply systems . . . . . . . . . .Table 603.2, 603.3,

608.3 CHEMICAL RESISTANT GLASS PIPE . . . . . . . . . . . .811.2 CHEMICAL WASTES . . . . . . . . . . . . . . . . . . . . .205.0, 811.0 CHIMNEYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5

Cleanouts . . . . . . . . . . . . . . . . . . . . .509.5.6.2, 509.5.9

Decorative Shrouds . . . . . . . . . . . .509.5.1.1, 509.5.4.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0

Existing . . . . . . . . . . . . . . . . . . . . . . .509.5.6, 509.5.6.3

Factory-built . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.1

Masonry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.3

Metal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.2

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.5

Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.8

Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.4 CHLORINATED POLYVINYL

CHLORIDE (CPVC) PIPE OR TUBING

Approved standards, water supply . . . . . . . .Table 604.1

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0

Joining and connections . . . . . . . . . . . . . . . .(see Joints

and connections)

Installation, residential . . . . . . . . . . . . . . . . . . . . .604.1.1

INDEX

CHLORINATED POLYVINYL

CHLORIDE/ALUMINUM/CHLORINATED POLYVINYL CHLORIDE (CPVC-AL-CPVC) PIPE OR TUBING

Approved standards, water supply . . . . . . . .Table 604.1 Joining and connections . . . . . . . . . . . . . . . .(see Joints

and connections) CIRCUIT VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .911.0 CLARIFIERS . . . . . . . . . . . . . . . . . . . . . . . . . .205.0, 1009.0 CLEANOUT PLUGS OR CAPS . . . . . . . . . . .707.1 – 707.3,

707.13, 1107.2 CLEANOUTS

Access . . . . . . . . . . . . . . . . . . . . . .707.8, 719.5, 801.3.2 Building sewer . . . . . . . . . . . . . . . . . . . . . . . . . . . .719.0 Change of direction . . . . . . . . . . . . . . . . . .707.4, 719.1,

801.3.2, 803.3, 1002.3 Clearances . . . . . . . . . . . . . . . . . . . . . . . . .707.8, 707.9 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . .814.3.1 Cover plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .707.8 Direction of flow . . . . . . . . . . . . . . . . . . . . . .707.5, 719.4 Horizontal drains . . . . . . . . . . . . . . . . . . . . .707.4, 719.1 Manholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .719.6 Plugs . . . . . . . . . . . . . . . . . . . . . . . .707.1, 707.2, 707.12 Prohibited use of . . . . . . . . . . . . . . . . . . . . . . . . . .316.1 Size . . . . . . . . . . . . . . . . . . . . . . . . . .707.1, Table 707.1 Soil or drain pipes . . . . . . . . . . . . . . . . . . . . . . . . .317.1 Where required . . . . . . . . . . . . . . . .707.4, 719.1, 909.1,

910.6, 1002.3, 1008.1, 1017.1, 1101.13.1, E 301.4 CLEARANCE

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . .707.8, 707.9 Fuel gas vents . . . . . . . . . .509.7.3.4, Table 509.7.3.4(1),

Table 509.7.3.4(2) Water heaters . . . . . . . . . . . . . . . . . . . .504.3.1, 504.3.2 CLEAR WATER WASTE

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .812.1 CLINICAL SINKS . . . . . . . . . . . . . . . . .205.0, 413.1, 1303.7 CLOSET BENDS . . . . . . . . . . . . . . . . . . . . . .310.3, 402.6.1 CLOSET RINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.6.1 CLOSET SCREWS . . . . . . . . . . . . . . . . . . . . . . . . . .402.6.2 CLOTHES WASHER SYSTEM

Commercial gray water discharge . . . . . . . .1503.8.2.3 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Residential gray water . . . .1503.1.1, 1503.2.2 Exception CODE, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 COLLECTION CENTERS AND

FACILITIES . . . . . . . . . . . . . . . . . . . . . .601.6, 725.0, 1010.3 COMBINATION WASTE AND

VENT SYSTEMS . . . . . . . . . . . . .205.0, 910.0, Appendix B COMBUSTIBLE

MATERIAL, DEFINITION . . . . . . . . . . . . . . . . . . . . .205.0 COMBUSTIBLE PIPING

INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .1404.0

2022 CALIFORNIA PLUMBING CODE 527

INDEX

COMBUSTION AIR . . . . . . . . . . . . . . . . . . . . . . . . . . .506.0 COMMISSARIES SERVING MOBILE

FOOD PREPARATION UNITS . . . . . . . . . . . .205.0, 422.8 COMMON VENT, FUEL GAS . . . . . . . .509.6.3, 509.10.2.2,

509.10.2.3, 509.10.3.1,

509.10.7.2, 510.2.3, 510.2.9,

510.2.15, 510.2.16 COMPLEX SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . .1503.1.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.0 COMPRESSION JOINTS . . . . . . . . . . .605.7.1.1, 605.10.1.1

705.2.2, 719.6, 1208.6.11.3 CONCEALED SLIP JOINTS . . . . . . . . . . . . . . . . . . .402.10 CONCEALING OF WORK PROHIBITED

BEFORE INSPECTION . . . . .105.1, 105.2.1.1, 105.2.1.2,

503.2, 1203.2 CONDENSATE WASTE

AND CONTROL . . . . . . . . . . . . . . . . . . . . . .814.0 – 814.6 CONDENSATE PUMPS . . . . . . . . . . . . . . . . . . . . . .814.1.1 CONDENSERS AND SUMPS . . . . . . . . . . . . . . . . . . .810.0 CONDUCTORS,

STORM WATER . . . . . . . . . . . . .205.0, 1101.12.1, 1101.13.1,

1101.16, 1103.0, 1602.6,

1602.7.2, 1603.15, K 103.2,

K 104.5, K 106.4 CONTAMINATION . . . . . . . . . . . . . . . . . . .205.0, 602.2, 602.3,

603.1, 811.1, 1321.8.8,

1321.10.4, 1321.10.7,

C 302.1, F 1101.3 CONTINUOUS VENT, DEFINITION . . . . . . . . . . . . . . .205.0 CONTINUOUS WASTES

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . .407.5, 701.4 CONTROL VALVES . . . . . . . . . . . . . . . . . . . . .408.3, 408.9,

606.5 – 606.7, 1303.1 COOLING WATER . . . . . . . . . . . . . . . . . . . . . . . . . . . .808.0 COPPER OR COPPER ALLOY

PIPE OR TUBING

Fuel gas . . . . . . . . . . . . . . . . . . . . .1208.6.3.2, 1208.6.4.2,

Table 1215.2(7) – Table 1215.2(13),

E 403.5

Joining and connections . . . . . . . . . . . . . . . . . .(see Joints

and connections)

Medical gas and

medical vacuum . . . . . . . . . . . . . . . . . . . . . . . . . 1318.4,

1319.1, 1323.4.2

Penetrating framing members . . . . . . . . . . . . . . . . . . 312.9

Prohibited use of. . . . . . . . . . . . . . . . . . . 811.1, 1208.6.3.2,

1208.6.4

Standard weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302.1

Underground drainage and vent . . . . . . . . . . . . . . . . 903.2

Water supply . . . . . . . . . . . . . . . . . . . . . . . . . 604.3, 604.4,

A 105.2, E 302.2.1

COSMETOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .422.6

Drinking water . . . . . . . . . . . . . . . . . . . . . . . . . . .601.4.3

Establishments . . . . . . . . . . . . . . . . . . . . . . . . . . .422.7

Handwashing Facilities . . . . . . . . . . . . . . . . . . . .601.4.2

Hot-and cold running water . . . . . . . . . . . . . . . .601.4.1 COVERED MULTIFAMILY

DWELLINGS, DEFINITION . . . . . . . . . . . . . . . . . . . .205.0 CRITICAL CARE AREA,

DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 CRITICAL LEVEL . . . . . . . . . . . . . . . . . .205.0, Table 603.2,

603.5.1, 603.5.2, 603.5.5, 603.5.13, C 501.3 CROSS-CONNECTION CONTROL . . . . . . . . . . . . . . .603.0 CROSS-CONNECTION, DISCOVERED . . . . . . . 1505.13.2.3,

1605.3.3 CROSS-LINKED POLYETHYLENE (PEX)

PIPING OR TUBING

Approved standards, water supply. . . . . . . . Table 604.1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218.0 Flexible connectors . . . . . . . . . . . . . . . . . . . . . . . 604.13 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604.1.2 Joining and connections . . . . . . . . . . . . . . . . (see Joints

and connections) Residential sprinklers . . . . . . . . . . . . . . . . . . . . . . 612.1 CROSS-LINKED POLYETHYLENE-ALUMINUM-

CROSSLINKED POLYETHYLENE (PEX-AL-PEX) PIPING OR TUBING

Approved standards, water supply. . . . . . . . Table 604.1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218.0 Flexible connectors . . . . . . . . . . . . . . . . . . . . . . . 604.13 Joining and connections . . . . . . . . . . . . . . . . (see Joints

and connections) Residential sprinklers . . . . . . . . . . . . . . . . . . . . . . 612.1

– D – DEPARTMENT, DEFINITION . . . . . . . . . . . . . . . . . . . . .206.0 DESIGN FLOOD ELEVATION . . . . . . . . . . . . . .206.0, 301.4 DEVELOPED LENGTH

Bar and fountain sink trap . . . . . . . . . . . . . . . . . . .801.4

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206.0

DWV piping . . . . . . . . . . . . . . . . . . . . . .707.4, 710.13.2

Indirect waste piping . . . . . . . . . . . . . . . . . . . . . .801.3.1

Trap arm . . . . . . . . . . . . . . . . . . . .1002.2, Table 1002.2

Water supply piping . . . . . . . . . .610.9, A 104.4, A 107.2

Wet vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.1 DIELECTRIC INSULATORS . . . . . . . . . . . . . . . . . . . . .507.1 DISHWASHING MACHINES . . . . . . . . . . . . . . . . . . . .414.0

Air gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .807.3

Approved standards . . . . . . . . . . . . . . . . . . . . . . .414.1

Backflow protection . . . . . . . . . . . . . . . . . . . . . . . .414.2

Discharge, drainage . . . . . . . . . . .414.3, 807.3, 1014.3.2

Drainage discharge, prohibited . . . . . . . .419.2, 1014.1.3

Drainage fixture unit (DFU) . . . . . . . . . . . . .Table 702.1

528 2022 CALIFORNIA PLUMBING CODE

Energy efficiency . . . . . . . . . . . . . . . . . . . . . . . .L 403.1

Flexible connector length . . . . . . . . . . . . . . . . . . .604.12

Water supply

fixture units (WSFU) . . . . .Table 610.3, Table A 103.1,

Table C 303.2 DISINFECTED TERTIARY RECYCLED

WATER, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . .206.0 DISPOSAL FIELDS . . . . . . . . . . . . . . 206.0, 1504.1, 1504.4,

1504.5.3, Appendix H DOSING TANKS . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 601.8 DRAINAGE SYSTEM

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . .707.0, 719.0 Change in direction . . . . . . . . . . . . . . . . . . . . . . . .706.0 Damage to public sewer or private

sewage disposal system . . . . . . . . . . . . .305.1, 714.0 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206.0 Fixture units . . . . . . . . . . . . . . . . . . . . . . . . .Table 702.1 Independent systems . . . . . . . . . . . . . . . . . . . . . . .311.0 Indirect waste . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 8 Joints and connections . . . . . . . . . . . . . . . . . . . . .705.0 Materials . . . . . . . . . . . . . . . . .701.2, Table 701.2, 715.0 Obstruction of flow . . . . . . . . . . . . . . . . . . . . . . . . .310.5 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.9 Sizing . . . . . . . . . . . . . . . . . .702.0, Table 702.1, 703.0,

Table 703.2, 717.0, Table 717.1 Slope of piping . . . . . . . . . . . . . . . . . . . . . . . . . . .708.1 Sumps and ejectors . . . . . . . . . . . . . . . . . . . . . . . .710.0 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .712.0, 723.0 Waste detrimental to . . . . . . . . . . . .306.0, 811.1, 1012.1 DRINKING FOUNTAINS . . . . . . . . . . . . . . . . .206.0, 415.0,

809.0, E 501.8 DUCTILE IRON PIPE . . . . . . . . . . . . . . .Table 604.1, 605.4 DURHAM SYSTEM, DEFINITION . . . . . . . . . . . . . . . .206.0

– E – EARTHQUAKE-ACTUATED GAS

SHUTOFF VALVES . . . . . . . . . . . . . . . . . . . . . . . . . .1211.8 EFFECTIVE GROUND-FAULT

CURRENT PATH, DEFINITION . . . . . . . . . . . . . . . . .207.0 EFFECTIVE OPENING . . . . . . . . . . . . .207.0, Table 603.3.1 EJECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . .710.2 – 710.5,

710.9 – 710.12 EMERGENCY EYEWASH AND

SHOWER EQUIPMENT . . . . . . . . . . . . . . . . . . . . . .416.0 EMERGENCY SANITARY DRAINAGE . . . . . . . . . . . . . .727.0 ENFORCING AGENCY, DEFINITION . . . . . . . . . . . . . . .207.0 ESSENTIAL PLUMBING PROVISIONS . . . . . . . . . . . . .321.0 EXCAVATIONS . . . . . . . . . . . . . . . . .314.0, 1203.2, 1504.4,

H 301.1, H 701.4 EXCESSIVE WATER PRESSURE . . . . . . . . . . . . . . . .608.2 EXPANSION AND CONTRACTION

OF PIPE, PROVISION FOR . . . . . . . . . . . . . . . . . . .312.2 EXPANSION TANKS . . . . . . . . . . . . . . . . . . . . .608.2, 608.3

INDEX

– F – F RATING . . . . . . . . . . . . . . .208.0, 1404.3, 1405.3, 1406.4 FAUCETS

Approved standards . . . . . . . . . . 417.1, 417.4, L 402.5.1 Kitchen . . . . . . . . . . . . . . . . . . . . . . . . . 420.2.1, 420.2.2 Maximum flow rate. . . . . . . . . . . . . . . . . . . 407.2, 420.2,

L 402.4, L 402.5 Metering . . . . . . . . . . . . . . 407.2.4, 407.4, Table L 402.1,

L 402.5.2, Table L 701.2(1) Residential kitchen . . . . . . . . . . . . . . . . 420.2.2, L 402.4 Self closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.4 Separate controls for

hot and cold water . . . . . . . . . . . . . . . . . . . . . . . 417.5 Sink faucets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420.2 Temperature limitation. . . . . . . . . . . 407.3, 408.3, 409.4,

410.3, 416.2 With pull out spouts . . . . . . . . . . . . . . . . . . . . . . . . 417.4 FIRE SPRINKLERS, RESIDENTIAL . . . . . . . . . . . . . .612.0 FIREFIGHTER BREATHING AIR

REPLENISHMENT SYSTEMS . . . . . . . . . . . .Appendix F FITTINGS

Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .419.2 Cleanout . . . . . . . . . . . . . . . . . . . . . . . . . . .707.1, 707.2 Dielectric . . . . . . . . . . . . . . . . . . . . . . .605.15, 605.16.1,

605.16.3, 705.10.2, 1322.6.1, E 403.8.2

Drainage system . . . . . . . . . . .Table 701.2, 701.3, 705.0,

706.0, E 504.3

Firefighter breathing air

replenishment systems . . . . . . . . . . . . . . . . . .F 801.3

Fixture . . . . . . . . . . . . . . . . . . . . . . .402.9, 403.2, 417.0,

603.5.19, L 402.0

Fuel gas piping . . . . . . . . . . . . . . . .1208.6.5, 1208.6.10,

1208.6.11, 1210.4.1

Fuel gas vent . . . . . . . . . . . . . . . . . .509.3.6(2), 509.4.2,

510.2.8, 510.2.9

Gray water . . . . . . . . . . . . . . . . . . . . . . . . . . . .1503.9.2

Inlet, for fixture connections . . . . . . . . . . . .704.1, 704.2

Lead content . . . . . . . . . . . . . . . . . . . . . .604.2, 604.2.1

Material of . . . . . . . . . . . . . . . . . . . .604.0, Table 604.1,

Table 701.2, 701.3, 903.0,

1208.6, 1208.6.10, 1208.6.10.5

Medical gas

and medical vacuum . . . . . .1320.2, 1320.2.1, 1321.1

Plumbing vent . . . . . . . . . . . . . . . . . . . . . . . . . . . .903.0

Prohibited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.1

Screwed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.8

Water supply system . . . . . . . . . . . .604.0, Table 604.1,

605.0, A 107.3 FIXTURE . . . . . . . . . . . . . . . . . . . . .(see Plumbing fixtures)

Branch, definition . . . . . . . . . . . . . . . . . . . . . . . . .208.0

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704.0

Drain, definition . . . . . . . . . . . . . . . . . . . . . . . . . . .208.0

2022 CALIFORNIA PLUMBING CODE 529

INDEX

Flanged connection . . . . . . . . . . . . . . . . . . . . . . . .402.6 Future installations . . . . . . . . . . . . . . . . . . . . . . . .402.11 Plumbing . . . . . . . . . . . . . . . . . . (see Plumbing fixtures) Units, drainage (DFU) . . . . . . . . . . . 702.1, Table 702.1,

C 303.1, Table C 303.3 Units, water supply (WSFU) . . . . . . . 610.3, Table 610.3,

610.10, Table 610.10, A 103.1, Table A 103.1, C 303.1, Table C 303.2 FLAGPOLING OF VENTS . . . . . . . . . . . . . . . . . . . . . .906.3 FLAMMABLE VAPOR OR FUMES . . . . . . . . . . .208.0, 507.12 FLASHING . . . . . . . . . . . . . . . . . . . . . . . . .701.5, 906.5, 906.6,

1102.3, K 103.1.1 FLOOD RESISTANT CONSTRUCTION

Coastal high hazard area . . . . . . . . . . . . .205.0, 301.4.1 Design flood elevation . . . . . . . . . . . . . . . . . . . . . .206.0 Flood hazard area . . . . . . . . . . . . . . . . . . . . . . . . .208.0 Flood hazard resistance . . . . . . . . . . . . . . . . . . . . .301.4 FLOOD-LEVEL RIM . . . . . . . . . . . . . . . . . . . .208.0, 801.3.2 FLOODED, DEFINITION . . . . . . . . . . . . . . . . . . . . . . .208.0 FLOOR DRAINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .418.0

Connected into a trap . . . . . . . . . . . . . . .1006.1, 1007.1 Directly connected to

drainage system . . . . . . . . . . . . . . . . . . . . . . . .1007.1 Location . . . . . . . . . . . . . . . . . . . . .418.3, 418.4, 1017.1 Required . . . . . . . . . . . . . . .408.7, 704.3, 1017.1, E 501.6 FLUSH TANKS . . . . . . . . . . . . . . . . . . .208.0, 402.4, 413.1,

413.3, 413.5, 601.2 FLUSH VALVES, DEFINITION . . . . . . . . . . . . . . . . . . .208.0 FLUSHOMETER TANKS . . . . . . . . . . . . . . . . .208.0, 411.2,

413.1, 603.5.3 FLUSHOMETER VALVES . . . . . .208.0, 413.1, 413.2, 601.2,

603.5.1, 610.10,

Table 610.10, L 402.2.2 FLUX . . . . . . . . . . . . . . . . . . . . . . . . . .604.1, 604.2, 605.1.1,

605.1.4, 705.3.1, 705.3.3,

1321.9, 1321.9.2, 1321.11.1 FOG DISPOSAL SYSTEMS . . . . . . . . . . . . . .208.0, 1015.0 FOOD ESTABLISHMENT, DEFINITION . . . . . . . . . . . . .208.0 FOOD-HANDLING EQUIPMENT

AND FIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . . . .801.3 FOOD WASTE DISPOSER . . . . . . . . . . . . . . .419.0, 714.4,

1001.2, 1014.1.3 FREEZE PROTECTION . . . . . . . . . . . . . . . . . . .312.6, 603.4.7,

603.5.7, 608.2, 1005.1

1210.1.4, 1210.7.1, 1323.2,

1503.9.4, 1603.17, K 106.0 FROST OR SNOW CLOSURE . . . . . . . . . . . . . . . . . . .906.7 FUEL GAS PIPING . . . . . . . . . . . . . . . . . . . . . . .Chapter 12

Cathodic protection . . . . . . . . . . .E 403.8.1 – E 403.8.4

Change in direction . . . . . . . . . . . . . . . . . . . . . . .1210.6

Concealed location . . . . . . . . . . . . . . . . . . . . . . .1210.4

Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . .1213.4

Electrical bonding and grounding . . . . . . . . . . . . .1211.0 Inspection and testing . . . . . . . . . . . . . . .1203.0, 1213.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1210.0 Interconnections . . . . . . . . . . . . . . . . . . . . . . . . .1208.3 Joints and fittings . . . . . . . . . . . . . . . . . . . . . . . . .1208.6.5,

1208.6.11 – 1208.6.12.4, 1213.2.1, 1213.2.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1208.6 Obstruction of flow . . . . . . . . . . . . . . . . . . . . . . .1210.10 Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1213.6 Sizing . . . . . . . . . . . . . . . . . . . .1208.4, 1214.0, 1215.0,

Table 1215.2(1) – Table 1215.2(36),

E 403.3 Supports . . . . . . . . . . . . . . . .1210.3.5, Table 1210.3.5.1 Underground installation . . . . . .1208.6.3.3, 1208.6.4.4,

1210.1, E 401.2, E 403.7, E 403.8.4 FUEL GAS VENTS

Appliances not requiring vents . . . . . . . . . . . . . .509.2.1 Caps . . . . . . . . . . . . . . . . . . . . . . .509.6.1(6), 509.7.4(3) Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.7.3.4,

Table 509.7.3.4(1),

Table 509.7.3.4(2) Dampers . . . . . . . . . . . . . . . . . . . . . . . .509.13, 509.14,

509.14.1 Direct-vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.2.6

General requirements . . . . . . . . . . . . . . . . . . . . . .509.0

Insulation shield . . . . . . . . . . . . . . . . . . . . . . . .509.6.1.1

Integral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.2.7

Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.1

Mechanical draft . . . . . . . . . . . . . . .509.3.3 – 509.3.3.5

Obstruction of flow . . . . . . . . . . . . . . . . . . . . . . . .509.15

Plastic piping . . . . . . . . . . . . . . . . . . . . . . . . . . .509.4.1

Special . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.4.3

Termination . . . . . . . . . . . . . . . .509.6.1, 509.7.2, 509.8

Wall penetrations . . . . . . . . . . . . . . . . . . . . . . . . . .509.8 FUEL GAS VENT, SIZING

Category I appliances . . . . . . . . . . . . . .509.6.2.1, 510.0

Multiple appliances . . . . . . . . . . . . . . . . . . . . . . . .510.2,

Table 510.2(1) – Table 510.2(9)

Multistory . . . . . . . . . . . . . . . . . . . . .509.6.3, 509.6.3.2,

510.2.13 – 510.2.16

Single appliance . . . . . . . . . . .509.7.4(1)(b), 509.10.2.1,

510.1, 510.1.2,

Table 510.1.2(1) – Table 510.1.2(6) FUTURE CONNECTIONS . . . . . . . . . . . . . . . . . . . .1504.9.1

– G – GANG OR GROUP SHOWERS . . . . . . .209.0, 408.3, 408.8 GARBAGE GRINDER . . . . . . . . .(see Food waste disposer) GRADE

Building sewer . . . . . . . . . . . . . . . . . . . . . . . . . . . .718.1

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209.0

530 2022 CALIFORNIA PLUMBING CODE

Horizontal drainage . . . . . . . . . . . . . . . . . . . . . . . .708.0 GRAVITY DRAINAGE REQUIRED . . . . . . . . . . . . . . .709.0 GRAYWATER, DEFINITION . . . . . . . . . . . . . . . . . . . . . .209.0 GRAY WATER SYSTEMS . . . . . . . . . . . . . . . . 209.0, 601.3.3,

Table 1501.5, 1501.6,

1502.0 , 1503.8.3 GRAY WATER SYSTEM COMPONENTS . . . . . . . . .1503.9 GREASE INTERCEPTORS . . . . . . . . . . . . . . . . . . . .1014.0

Approved standards . . . . . . . . . . . . . . . . . . . . . . .1014.1

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209.0

Capacity . . . . . . . . . . . . . . . . . .1014.2.1, Table 1014.2.1

Gravity-type . . . . . . . . . . . . . . . . .1014.3, Table 1014.3.6

Hydromechanical-type . . . . . . . . . . . . . . . . . . . . .1014.2

Not required . . . . . . . . . . . . . . . . . . . . . . . . . . . .1014.1.3

Required . . . . . . . . . . . . . . . . . .1010.1, 1014.1, H 101.3 GRINDER PUMPS . . . . . . . . . . . . . . . . . . . . . . . . . . .710.12

– H – HANDHELD SHOWERS . . . . . . . . . . . . . . . . . . . . . . . .417.3 HANDWASHING FIXTURE, DEFINITION . . . . . . . . . . .210.0 HANGERS . . . . . . . . . . . . . . . . . . . . . . . . . . .(see Supports) HARMFUL WASTES . . . . . . . . . . . . . . . . . . . .(see Wastes,

detrimental or harmful) HEALTH AND SAFETY . . . . . . . . . . . . . . . . . . .101.3, 102.5 HEALTH FACILITIES AND CLINICS,

WATER DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . .613.0 HEAT EXCHANGERS . . . . . . . . . . . . . . . . . . . . . . .505.4.1,

603.5.4, C 302.0 HEAT-FUSION WELD JOINTS . . . . . . . . . . .210.0, 605.6.1,

605.11.1, 1208.6.11.2 HORIZONTAL BRANCH, DEFINITION . . . . . . . . . . . .210.0 HORIZONTAL PIPE, DEFINITION . . . . . . . . . . . . . . . .210.0 HORIZONTAL-TO-HORIZONTAL

DRAINAGE FITTINGS . . . . . . . . . . . . . . . . . . . . . . .706.3 HORIZONTAL-TO-VERTICAL

DRAINAGE FITTINGS . . . . . . . . . . . . . . . . . . . . . . .706.2 HORSE MEAT AND PET FOOD

ESTABLISHMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .601.8 HOT-MOPPED SHOWER PANS . . . . . .(see Shower, pans) HOT WATER SUPPLY PIPING . . . . . .601.2.1, 609.1, 609.4,

609.12, 610.3,

610.12.1, L 501.0,

L 502.0, L 503.0 HOUSE DRAINS . . . . . . . . . . . . . . . . . .(see Building drain) HOUSE SEWERS . . . . . . . . . . . . . . . . .(see Building sewer)

– I – IDENTIFICATION

Cast-iron soil pipe . . . . . . . . . . . . . . . . . . . . . . . . .701.2

Copper tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.4

Fuel gas piping . . . . . . . . . . . . . . . . . . . . . . . . .1208.7.4

INDEX

Medical gas and

medical vacuum systems . . . . . . . . . . . . . . . . . .1318.5,

1323.13 – 1323.13.2, 1323.14, 1323.15 Nonpotable Water Lines . . . . . . . . . . . . . . . . . . . .615.0 Piping, fittings, traps, and fixtures . . . . . . . . . . . . . .301.2.1 Potable Water Lines . . . . . . . . . . . . . . . . . . . . . . .615.0 Water, nonpotable and potable . . . . . . . . . . . . . . .601.3 INCREASERS AND REDUCERS . . . . . . . . . . . . . . . .316.0 INDIRECT-FIRED WATER HEATERS . . . . . . . .211.0, 505.4,

603.5.4, 608.7 INDIRECT WASTE . . . . . . . . . . . . . . . . . . . . . . . .Chapter 8

Air gap or break . . . . . . . . . . . . . . . . . . . . . . . . . . .801.2 Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .807.0 Approval required . . . . . . . . . . . . . . . . . . . . . . . . .802.0 Aspirators . . . . . . . . . . . . . . . . . . . . . . .603.5.9, 1303.5 Chemical wastes . . . . . . . . . . . . . . . . . . . . . . . . . .811.0 Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . .801.3.2, 803.3 Clear water wastes . . . . . . . . . . . . . . . . . . . . . . . .812.0 Condensate . . . . . . . . . . . . . . . . . .814.1, 814.1.1, 814.5 Food handling fixtures . . . . . . . . . . . . . . . . . . . . .801.3.3 High temperature discharge . . . . . . . . . . . . . . . . .810.1 Interceptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .902.1 Receptors . . . . . . . . . . . . . . . . . . . . . . . . . .801.4, 804.0 Sterile equipment . . . . . . . . . . . .801.6, 806.0, 1303.4.1 Swimming pools . . . . . . . . . . . . . . . . . . . . . . . . . .813.0 Traps . . . . . . . . . . . . . . . . . . . . . . .801.3.2, 803.3, 814.5 Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .803.3 Where required . . . . . . . . . . . . . . . . . . . . . . . . . . .801.2 INDIVIDUAL VENTS . . . . . . . . . . .211.0, Table 703.2, 904.1,

908.2.1, C 601.6 INDUSTRIAL WASTES

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811.4 Approval required . . . . . . . . . . . . . . . . . . . . . . . . . .811.1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211.0 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . .306.0, 811.7 Materials . . . . . . . . . . . . . . . . . . . . .811.2, 811.3, 903.2.2 Pretreatment required . . . . . . . . . . . . . . . . .306.1, 811.1 Prohibited material . . . . . . . . . . . . . . . . . .811.1, 903.2.2 Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811.6 INSANITARY

Defective systems . . . . . . . . . . . . . . . . . . . . . . . .105.3.1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211.0 Health and safety . . . . . . . . . . . . . . . . . . . . . . . . .102.5 INSPECTION AND TESTING . . . . . . . . . . . . . . . . . . . .105.0

Alternative engineering design . . . . .301.3.1 – 301.3.1.2,

301.5.6 Cross-connection . . . . . . . . . . . . . . . . .1605.3, 1605.3.2 Final . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.2 Reinspection . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.2.6 Required . . . . . . . . . . . . . . . . . . . .105.1, 105.2, 1203.0,

1213.1, 1321.12, 1324.0, 1406.0, 1501.5, Table 1501.5, 1502.0, 1601.5,

Table 1601.5, 1605.0

2022 CALIFORNIA PLUMBING CODE 531

INDEX

Reclaimed (recycled) water . . . .1505.13, Table 1505.15

Rough-in . . . . . . . . . . . . . . . . . . . . . . . .105.2, 1203.3.1

Scheduling of . . . . . . . . . . . . . . . . . . . . . . . . . . .105.2.3

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3 INSPECTOR . . . . . . . . . . .(see Authority Having Jurisdiction) INSULATION

Domestic hot water supply . . .609.11, 609.12.3, L 501.2

Fuel gas vent . . . . . . . . . . . . . . . . . . . . . . . . . .509.6.1.1

Penetrating firestop system . . . . . . . . . . .1404.5, 1405.7

Pool covers . . . . . . . . . . . . . . . . . . . . . . . . . . .L 503.3.6

Service hot water . . . . . . . . . . . . . . . . . . . . . .L 503.3.3,

Table L 503.3.3

Tracer wire . . . . . . . . . . . . . . . . . . . .604.10.1, E 403.8.4 INTERCEPTING HOPPERS OR SINKS . . .(see Receptors) INTERCEPTOR (CLARIFIER)

Abandoned . . . . . . . . . . . . . . . . . . . . . . . . . . . .1014.3.7

Auto wash racks . . . . . . . . . . . . . . . . . . . . . . . . . .1011.0

Bottling establishments . . . . . . . . . . . . . . . . . . . .1013.0

Cleanouts, location . . . . . . . . . . . . . . . . . . . . . . . .707.7

Commercial and industrial laundries . . . . . . . . . .1012.0

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211.0

Grease . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1014.0

Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.0

Oil and flammable liquid . . . . . . . . . . . . . . . . . . . .1017.0

Packing establishments . . . . . . . . . . . . . . . . . . . .1010.0

Sand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1016.0

Slaughterhouses . . . . . . . . . . . . . . . . . . . . . . . . .1010.0

Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .902.1 INTERMIXING OF

METALS PROHIBITED . . . . . . . . . . . . . . . . .310.6, 604.1 INVERT, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . .211.0 IRON PIPE SIZE (IPS) PIPE . . . . . . . . . . . . . . . . . . . .302.0 IRRIGATION FIELD, DEFINITION . . . . . . . . . . . . . . . . .211.0 ISLAND FIXTURE, VENTING . . . . . . . . . . . . . . . . . . .909.0

– J – JOINTS AND

CONNECTIONS . . . . . . . . . . . . . . . .315.0, 605.0, 705.0,

1208.6.11 – 1208.6.13.5,

1320.0

ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .705.1

Asbestos cement pipe . . . . . . . . . . . . .Table 510.1.2(5),

Table 510.2(5)

Brazed joint . . . . . . . . . . .212.0, 605.1.1, 609.3, 705.3.1,

705.10.1, 705.10.2, 1208.6.11.1,

1208.6.11.2, 1309.4, 1321.1

Cast-iron piping . . . . . . . . . . . . . . . . . . . . .604.6, 701.2,

705.2, 705.10.1

Caulked joint . . . . . . . . . . . . . . . . . . . . . . . . . . . .705.2.1

Compression joint . . . . . . . . . . . . . . . .605.6.2, 605.7.1,

605.10.1.1, 605.11.2,

705.2.2, 1208.6.11.3

Copper or copper

alloy pipe or tubing . . . . . . . . . . . . . . . .605.1, 705.3,

705.10.1, 705.10.2 CPVC piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.2 CPVC-AL-CPVC piping or tubing . . . . . . . . . . . . .605.3 Ductile iron piping . . . . . . . . . . . . . . . . . . . . . . . . .605.4 Expansion joint . . . . . . . . . . . .705.9.2, 1101.5, 1213.2.2 Flared . . . . . . . . . . . . . . . . . . . . . . .605.1.2, 1208.6.10.4 Galvanized steel pipe . . . . . . . . . . . . . . . . .605.5, 705.4 Ground joints . . . . . . . . . . . . . . . . . . . . . . . . . . .705.9.3 Heat-fusion joints . . . . . . . . . . . . . . . . . .210.0, 605.6.1,

605.11.1, 1208.6.11.2 Lead content . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.2 Mechanical joints . . . . . . . . . .605.1.3, 605.2.1, 605.4.1,

605.5.1, 605.6.2, 605.7.1, 605.9.2, 605.10.1, 605.11.2, 605.12.1, 605.13.1, 605.16.3, 705.1.1, 705.2.2, 705.3.2, 705.4.1, 705.6.1, 705.7.1, 705.8.1, 705.10.4, 1208.6.11.3 PE pipe or tubing . . . . . . . . . . . . . . . . . .605.6, 1208.6.5 PE-AL-PE pipe or tubing . . . . . . . . . . . . . . . . . . . .605.7 PE-RT tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.8 PEX tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.9 PEX-AL-PEX pipe or tubing . . . . . . . . . . . . . . . . .605.10 Plastic piping, joints, and fittings . . . . .605.2 – 605.3.2.1,

605.6 – 605.12.3, 705.1.1 – 705.1.3, 705.5 – 705.5.1.3, 705.6 – 705.6.3, 705.10.3, 1208.6.11, 1210.1.7.1 PP piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.11 Prohibited fittings

and practices . . . . . . . . . . . . . . . .310.0, 315.2, 604.2,

1321.8.4, 1321.12.3, 1322.7 PVC piping . . . . . . . . . . . . . . . . .605.12, 705.6, 705.9.4 Screwed joint . . . . . . . . . . . . . . . . . . . . . .310.8, 701.3.1 Slip joint . . . . . . . . . . . . . . . . . . . . . . . . . .221.0, 402.10,

605.14, 705.9.1, 1003.2

Soldered joint . . . . . . . . . . . . . .212.0, 605.1.4, 705.3.3,

A 107.3

Solvent cement plastic pipe . . . . . . . . .605.2.2, 605.3.1,

605.12.2, 705.1.2, 705.6.2,

705.9.4

Stainless steel pipe . . . . . . . . . . . . . . .605.13, 605.16.3,

705.7, 705.10.4

Threaded joint . . . . . . . . . . . .605.1.5, 605.2.3, 605.5.2,

605.11.3, 605.12.3, 605.16.1,

705.1.3, 705.3.4, 705.4.2,

705.6.3, 705.10.2, 1208.6.9,

1208.6.10.1, 1208.6.10.5, 1322.5, A 107.3

532 2022 CALIFORNIA PLUMBING CODE

Tightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3 Transition joint . . . . . . . . . . . . . . . . . . . . . . . . . .705.9.4 Various materials . . . . . . . . .605.16, 705.10, 1210.1.3.8 Vitrified clay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .705.8 Welded joint . . . . . . . . . . . . . . . . . . . . .212.0, 605.13.2,

705.7.2, 1208.6.10.1, 1322.1, F 1101.2

– L – LABELED . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0, 301.2 LAUNDRY TUBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1001.2 LAVATORIES . . . . . . . . . .407.0, 422.9, Table 702.1, E 501.4 LAVATORIES IN SETS . . . . . . . . . . . . . .214.0, Table 702.1 LAVATORY, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . .214.0 LAVATORY FAUCETS

Common and public use areas . . . . . . . . . . . . . .407.2.3

Maximum flow rate . . . . . . . . . . . . . . . . .407.2.1, 407.2.2

Metering faucet . . . . . . . . . . . . . . . . . . . . . . . . . .407.2.4

Public . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .407.2.1 Residential . . . . . . . . . . . . . . . . . . . . . . . . . . . . .407.2.2 LAWN SPRINKLERS . . . . . . . . .Table 610.3, Table A 103.1 LEAD

Allowable lead contents . . . . . . . . . . . . . .604.2, 604.2.1 Bends and traps . . . . . . . . . . . . . . . . . . . . .701.5, 906.6 Closet rings . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.6.1 Flashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1102.3.1 Roof drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1102.1 Sheet . . . . . . . . . . . . . . . . . . . . . . .408.7.3, 701.5, 906.6 Water supply . . . . . . . . . . . . . . . . . . . . . .604.2, 604.2.1 LEADERS . . . . . . . . . . . . . . . . . .214.0, 1101.4.3, 1101.12.1,

1101.13.1, 1101.15, 1101.16,

1101.16.1, 1103.0, Table 1103.1 LIMITED-DENSITY OWNER-BUILT

RURAL DWELLING . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0 LIQUEFIED PETROLEUM

GAS (LP-GAS) . . . . . . . . . . . . . .214.0, 1202.1, 1208.5.1,

1208.6.7.3, 1208.6.11.4,

1212.11, E 401.2,

E 403.1, E 403.10 LIQUID WASTES . . . . . . . . . . . . . . . . .214.0, 303.0, L 302.0 LISTED . . . . . . . . . . . . . . . . . . . . . . . . 214.0, 301.2, 402.6.2,

501.1 LISTING AGENCY . . . . . . . . . . . . . . . . . . . . . . .214.0, 301.2 LOCATION OF

Backwater valves . . . . . . . . .710.1, 710.3, 710.4, 710.6,

1006.0, 1101.6.4, 1503.2.3,

1503.9.1

Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . .308.0, 402.0

Fuel gas meters . . . . . . . . . . . . . . . . .1208.7 – 1208.7.3,

E 402.4 – E 402.4.2

Fuel gas valves . . . . . . . . . . . . . . . . .1210.9 – 1210.9.4,

1212.5.3, 1212.6, E 402.3

INDEX

Interceptors and separators . . . . . . . . . . . .1009.3, 1009.5 Medical gas and

medical vacuum system valves . . . . . . . . . . . .1314.0 Plumbing system or sewer on lot . . . . . . . .307.0, 721.1,

Table 721.1 Private sewage disposal system . . . . . . . . . . . . .H 101.8 Water heaters . . . . . . . . . . . . . . . .504.1, 504.3 – 504.6,

506.3, 507.2, 507.5, 507.10, 507.12 – 507.15, 507.25, 507.26, 507.27 LOT, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0 LOW HAZARD . . . . . . . . . . . . . . . . . . . . .214.0, Table 603.2 LOW VOC CEMENT, DEFINITION . . . . . . . . . . . . . . . . .214.0 LOW VOC ONE-STEP

CEMENT, DEFINITION . . . . . . . . . . . . . . . . . . . . . . .214.0 LOW VOC PRIMER, DEFINITION . . . . . . . . . . . . . . . . .214.0

– M – MACERATING TOILET SYSTEMS . . . . . . . . .215.0, 710.13 MAIN, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . .215.0 MAINTENANCE . . . . . . . . . .102.2, 102.3, 1009.6, 1014.1.2,

1501.5, Table 1501.5, 1501.6, 1504.11, 1505.15, Table 1505.15, 1601.5, Table 1601.5, 1601.5.1, K 101.5, K 101.5.1, Table K 104.3.3,

L 501.5, L 504.2 MALLEABLE IRON . . . . . . . . .604.7, Table 604.1, Table 701.2 MANUFACTURED/MOBILE

HOME PARKS AND RECREATIONAL VEHICLE PARKS . . . . . . . .Appendix E MARKINGS . . . . . . . . . . . . . . . . . . . . . . .(see Identification) MATERIALS

Alternate . . . . . . . . . . . . . . . . . . . . . . . . .301.3, H 501.13

Approval required . . . . . . . . . . . . . . . . . . . . . . . . . .301.2

Approved standards . . . . . . . . . . . . . . . . . . . . . .301.2.2

Backwater, gate, or ball valves . . . . . . . . . . . . . . .710.6

Building drains . . . . . . . . . . . . . . . . . . . . . . .Table 701.2

Building sewers . . . . . . . . . . . .Table 701.2, 715.1, 720.0

Cesspools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 801.0

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .707.1

Drainage piping, joints,

and fittings . . . . . . . . . . . . . . . . . . .701.2, Table 701.2,

701.3, 705.0

Fuel gas piping, joints,

and fittings . . . . . . . . . . . . . . . . . . .1208.6 – 1208.6.2,

1208.6.3 – 1208.6.5,

1208.6.10, 1208.6.11, 1208.6.12

Marking of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301.2.1

Medical gas and medical vacuum . . . . . . . . . . . .1318.0

Potable water piping,

joints, and fittings . . . . . . . . . . . . . . . . . . . .604.0, 605.0

Rainwater catchment system . . . . . . . . . . . . . . . .1602.7

Septic tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 501.3

2022 CALIFORNIA PLUMBING CODE 533

INDEX

Storm drainage pipe . . . . . . . . . . . . . . . . . . . . . . .1101.4 Subsoil drain . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.4.6 Sumps or receiving tanks . . . . . . . . . . . . . . . . . . .710.8 Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1003.1 Vents (DWV) . . . . . . . . . . . . . . . . . . .Table 701.2, 903.0 MAY, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . .215.0 MEAT PACKING AND SLAUGHTERHOUSES . . . . .1010.0 MEDICAL GAS AND MEDICAL

VACUUM SYSTEMS . . . . . . . . . . . . . . . . . . . .Chapter 13

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1324.4 Aspirators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1303.5 Category 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Category 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Category 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Category 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.0 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1318.2 Construction documents . . . . . . . . . . . . . . . . . . .1304.3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215.0 Installation requirements . . . . . . . . . . . .1304.0, 1323.0 Joints and connections . . . . . . . . . . . . . . . . . . . .1320.0 Labeling and identification . . . . . . . . . . . . . . . . .1323.13 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1318.0 Medical air systems . . . . . . . . . . . . . . . . . . . . . . .1312.0 Medical vacuum systems . . . . . . . . . . . . . . . . . . .1319.0 Pipe sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1323.1,

Table 1323.1.4(1) – Table 1323.1.4(6) Pressure-regulating equipment . . . . .1308.0, 1321.10.2 Shutoff valves . . . . . . . . . . . . . . . . . . . . . . . . . . .1318.1 Station outlets/inlets . . . . . . . . . . . . . . . . . . . . . .1305.3,

1314.10, 1315.0 Sterilizers and bedpan steamers . . . . . . . . . . . . .1303.4 System certification . . . . . . . . . . . . . . . . . . . . . . .1306.0 Testing and inspection . . . . . . . . . . . . . . . . . . . . .1324.0 Warning system . . . . . . . . . . . . . . . . . . . . . . . . . .1317.0 METALS, INTERMIXING PROHIBITED . . . . . .310.6, 604.1 METER, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . .215.0 METERING FAUCETS . . . . . . . . . . . . . . . .407.2.4, 407.2.4.1,

417.1.2 MINIMUM STANDARDS . . . . . . . . . . . . . . . . . . . . . . . .301.2 MULCH, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . .215.0 MULCH BASIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215.0,