1504.5 - 1504.5.1

– N – NATURAL GAS, SPECIFIC GRAVITY . . . . . . . . . . . .1214.1 NITROGEN, NF, DEFINITION . . . . . . . . . . . . . . . . . . .216.0 NONCOMBUSTIBLE PIPING INSTALLATIONS . . . .1405.0 NONPOTABLE WATER

Alternate water source . . . . . . . . . . . . . . . . .Chapter 15 Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . .1506.9.6 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.3 Rainwater catchment system . . . . . . . . . . . .Chapter 16 Unlawful connections to . . . . . . . . . . .603.5.11, E 502.3 NONWATER SUPPLIED URINAL,

DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216.0

NONWATER URINALS . . . . . . . . . . . . . . . . 412.1.3, 412.1.4,

412.1.4.1, L 402.3.1 NUISANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . .102.5, 216.0

– O – OBSTRUCTIONS OF FLOW . . . . . . . . . . . . . . .310.5, 315.2 OFFSETS

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217.0 Drainage . . . . . . . . . . . . . .706.4, C 304.3.1, C 304.3.2,

C 304.4, C 401.4, C 601.7 Medical gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1320.2 Prohibited use . . . . . . . . . . . . . . . . . . . . . . . . . . .402.6.3 Venting (fuel gas) . . . . . . . . . . . . . . .509.6.2.2, 510.1.2,

510.2.4, 510.2.16 Venting (plumbing) . . . . . . . . . . . . . . . . . . . . . . . .910.5 OIL AND FLAMMABLE INTERCEPTORS . . . . . . . . .1017.0 ON-SITE TREATED NONPOTABLE

WATER SYSTEMS

Alternate Water Sources . . . . . . . . . . . . . . . . . . . . .601.3.3 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217.0 Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1506.9.6, Signage . . . . . . . . . . . . . . . . . . .1501.9, 1501.9.1, 1501.9.2 Water systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1506.0 ONE- AND TWO-FAMILY DWELLINGS . . . . . . . . . . . . .301.6 OPEN TRENCH WORK . . . . . . . . . . . . . . . . . . . . . . . .314.3 OPENING, EFFECTIVE,

DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207.0 OVERFLOWS . . . . . . . . . . . . . . . . . . . . .404.2, 413.5, 607.4,

1603.10, 1603.10.1

– P – PATIENT CARE SPACE, DEFINITION . . . . . . . . . . . . .218.0 PENALTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106.0 PENETRATION

FIRESTOP SYSTEMS . . . . . . . . . . .218.0, 1404.3, 1405.3 PERCOLATION TESTS . . . . . . . . . . . . . . . .1504.3, H 401.0 PERMITS, REQUIRED . . . . . . .104.1, 502.1, 1501.3, 1601.3,

E 101.2, E 302.7, H 101.9, K 101.3 PERMITS FEES . . . . . . . . . . . . . . . . . . . .104.5, Table 104.5 PIPING

ABS and PVC, Residential . .701.2(2)(a), 903.1.1, 1101.4 Drainage, changes in direction . . . . . . . . . . . . . . .706.0 Drainage, existing sewers . . . . . . . . . . . . . . . . . . .715.3 Drainage, horizontal slope . . . . . . . . . . . . .708.0, 718.1 Drainage, material . . . . . . . . . . . . . . .701.2, Table 701.2,

715.1, 720.1 Exposed to sunlight,

ABS and PVC . . . . . . . . . . . . . . . . . . . . . . . . . .906.1 Fuel gas . . . . . . . . . . . . . . . . . . . . . . . . .1208.0, 1210.0 Hangers and supports . . . . . . . . . . .313.0, Table 313.3,

1210.3.5, 1210.3.5.1, Table 1210.3.5.1, 1323.4 – 1323.4.5 Table 1323.1.4(1) – Table 1323.4.4

534 2022 CALIFORNIA PLUMBING CODE

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.3

Indirect waste . . . . . . . . . . . . . . . . . . . . . . . . . . . .803.0

Joints and connections . . .(see Joints and connections)

Medical gas, material . . . . . . . . . . . . . . . . . . . . . .1318.0

Plumbing vent, material . . . . . . . . . . .Table 701.2, 903.0

Protection of . . . . . . . . . . . . . . . . . . . . . . . .312.0, 718.3,

1210.1.3 – 1210.1.5

Rehabilitation of . . . . . . . . . . . . . . . . . . . . . . . . . .320.0

Storm drainage, materials . . . . . . . . . .1101.4 – 1101.4.6

Trenching, excavation,

and backfill . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314.0

Underground . . . . . . . . . . . . . . . . . . . .314.4.1, 1210.1.6

Water supply, material . . . . . . . . . . . .604.0, Table 604.1 PITS, SEEPAGE . . . . . . . . . . . . . . . . . .221.0, 714.3, 716.1,

722.2 – 722.4,

Appendix H PLUGS, CAPS, CLEANOUT . . . . . . . . . . . . . . .707.1, 707.2 PLUMBING

Additions, alterations,

renovations or repairs . . . . . . . . . . . . . . . . . . . .102.4

Appliances . . . . . . . . . . . . . .218.0, 304.1, 310.5, 313.1,

417.2, 603.4.6, 606.5,

Table 610.3, Table 702.1, 801.7,

803.3, 806.1, 807.0, 808.1,

Table A 103.1, L 302.2

Appurtenances . . . . . . . . . . . . . . . .218.0, 304.1, 313.1,

603.4.6, Table 610.3, Table 702.1,

814.2.1, 1505.8.2, 1505.10, 1506.9.3,

1602.9, Table A 103.1, L 501.2

Connected to sewer or

private disposal systems . . . . . .304.1, 713.1, L 302.2

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0

Inspection of . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.0

Official . . . . . . . . . . .(see Authority Having Jurisdiction)

Plumbing Equipment Schedules . . . . . . . . . . . . .323.0

System, definition . . . . . . . . . . . . . . . . . . . . . . . . .218.0

Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3, 105.3.1

Uncovered for inspection . . . . . . . . . . . . . . . . . .105.2.1

Vent, definition . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0

Vent system, definition . . . . . . . . . . . . . . . . . . . . . .218.0 PLUMBING FIXTURES

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.1, 413.2,

416.4, 422.4

Accessibility . . . . . . . . . . . . . . . . . . . . . . . .403.1, 403.2,

408.5, 408.6

Alternate materials . . . . . . . . . . . . . . . . . . .301.3, 406.3

Approved standards . . . . . . . . . . . .301.2.1, 301.2.2, 408.1,

409.1, 410.1, 411.1, 412.1,

415.1, 416.1, 417.1 – 417.4,

418.1, 420.1

Back-to-back . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704.2

Below curb or sewer level . . . . . . . . . . . . . .710.1, 710.2

INDEX

Clearance from wall, toilet, urinal . . . . . . . . . . . . .402.5 Connections, drainage . . . . . . . . . .304.1, 406.1, 408.4,

409.2, 415.3, 416.5, 419.2, 420.4, 704.0 Control valves . . . . . . . . . . . . . . . .408.3, 408.9, 601.2.1,

606.5 – 606.7, 1303.1, 1505.8, 1506.10 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 Distance from traps . . . . . . . . . . . . . . . .1001.2, 1002.2,

Table 1002.2 Fixture units . . . . . . . . . . . . . . . . . . .610.3, Table 610.4,

610.7 – 610.10, Table 610.10, 702.0, Table 702.1, Table 702.1(1), Table 702.2, 703.0, Table 703.2, Table A 103.1, Table C 303.2, Table C 303.3,

C 501.4, C 501.5 Floor drains . . . . . . . . . . . . .408.7, 414.3, 418.0, 704.3,

801.3.2, 1003.1, 1006.0, 1007.1, 1014.3.2, 1016.1, 1017.1, 1101.11, 1505.1, 1506.1, 1602.1, B 101.5, B 101.6.1, Table C 304.2,

Table C 304.3, E 501.6 Improper location of . . . . . . . . . . . . . . . . . . . . . . .308.0 Indirect wastes . . . . . . . . . . . . . . . . . . . . . . . . . . .804.1 Installation of . . . . . . . . . . . . . . . . .402.0, 405.3, 408.3,

408.7, 409.3, 409.6, 412.1.1, 413.1 – 413.3, 413.5, 415.4, 416.3, 418.3 Islands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .909.0 Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.2 Material of . . . . . . . . . . . . . .401.0, 406.2 – 406.4, 408.7 Minimum number . . . . . . . . . . . . . . . . . . . . . . . . .422.0 Must be connected to sewer . . . . . . . . . . . .304.1, 713.1 Must be provided with trap . . . . . . . . . . . . . . . . . .1001.2 Overflows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .404.0 Prohibited . . . . . . . . . . . . . . . . . . . . .310.5, 405.0, 910.7 Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .401.2 Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.5, 402.6 Size of waste for . . . . . . . . . .702.0, Table 702.1, 703.0,

Table 703.2 Special fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . .406.0 Strainers and connections . . . . . . . . . . . . .407.5, 408.4 Supply fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.7 Waste connections . . . . . . . . . . . . .407.5, 408.4, 409.2,

415.3, 416.5, 419.2, 420.4 Water supply required . . . . . . . . . . . . . . . . . . . . . .601.2 POLLUTION . . . . . . . . . . . .218.0, 603.1, Table 603.2, 714.5 POLYVINYL CHLORIDE (PVC)

PIPE OR TUBING

Approved standards,

water supply and DWV . . . . .Table 604.1, Table 701.2

2022 CALIFORNIA PLUMBING CODE 535

INDEX

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 Exposed to sunlight . . . . . . . . . . . . . . . . . . . . . . . .906.1 Flexible tubing for whirlpool bathtubs . . . . . . . . .409.6.1 Joining and connections . . . . . . . . . . . . . . . .(see Joints

and connections) Lining for shower receptors . . . . . . . . . . . . . . . . . .408.7 Roof drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1102.1 POLYETHYLENE (PE) PIPE OR TUBING

Approved standards,

water supply and DWV . . . . . . . . . . . . . .Table 604.1,

Table 701.2 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 Fuel gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1208.6.5,

Table 1215.2(19) – Table 1215.2(23), Table 1215.2(34) – Table 1215.2(36) Joining and connections . . . . . . . . . . . . . . . .(see Joints

and connections) Roof drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1102.1 POLYETHYLENE-ALUMINUM-POLYETHYLENE

(PE-AL-PE) PIPE OR TUBING

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

and connections) POLYETHYLENE OF RAISED

TEMPERATURE (PE-RT) PIPE OR TUBING

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

and connections) POLYPROPYLENE (PP) PIPE OR TUBING

Approved standards, water supply . . . . . . . .Table 604.1 Chemical waste . . . . . . . . . . . . . . . . . . . . . . . . . . .811.2 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 Joining and connections . . . . . . . . . . . . . . . .(see Joints

and connections) Roof drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1102.1 POLYVINYLIDENE FLUORIDE (PVDF)

PIPE OR TUBING

Chemical waste . . . . . . . . . . . . . . . . . . . . . . . . . . .811.2 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 POTABLE RAINWATER

CATCHMENT SYSTEMS . . . . . . . . . . . . . . . .Appendix K POTABLE WATER

Connections . . . . . . . . . . . . . .603.4.4, 603.5.6, 603.5.7,

603.5.10 – 603.5.12, 603.5.14, 603.5.20, 801.5, 1303.5 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0 Devices or assemblies . . . . . . . . . . . . . . . . . . . . .603.2 Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609.10 Protection from

heat transfer medium . . . . . . . . . . . .505.4.1, C 302.2

Heating . . . . . . . . . . . . . . . . . . . . . . . . . . .501.1, L 507.0 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.3 Joints and fittings . . . . . . . . . . . . . . .604.2, 604.6, 605.0 Materials . . . . . . . . . . . . . . . . . . . . . .604.1, Table 604.1 Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.5.17 Protection of . . . . . . . . . . . . . . . . . . . . . . . .602.0, 603.0 Sizing piping . . . . . . . . . . . . . . . . . . .610.0, Appendix A Supply required . . . . . . . . . . . . . . . . . . . .601.2, E 302.1 Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.0 Unlawful connection to . . . . . . . .602.0, 603.5.11, 1503.3,

. . . . . . . . . . . . . . . . . .603.5.17 Protection of . . . . . . . . . . . . . . . . . . . . . . . .602.0, 603.0 Sizing piping . . . . . . . . . . . . . . . . . . .610.0, Appendix A Supply required . . . . . . . . . . . . . . . . . . . .601.2, E 302.1 Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.0 Unlawful connection to . . . . . . . .602.0, 603.5.11, 1503.3,

1505.4, 1506.4, 1602.4, E 502.3, K 102.2 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .606.0 PRE-RINSE SPRAY VALVES . . . . . . . . . . . . .420.3, L 201.0 PRESSED FITTINGS . . . . . . . . . . . . . . . . .605.1.3, 605.1.3.2,

605.13.1, 605.16.1, 705.7.1 PRESSURE DRAINAGE

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .805.0 PRESSURE, EXCESSIVE, WATER . . . . . . . . . . . . . . .608.2 PRESSURE-LOCK-TYPE

CONNECTION, DEFINITION . . . . . . . . . . . . . . . . . .218.0 PRESSURE LOSSES, WATER . . . . . . . . . . . . . . . . . .610.2 PRESSURE REGULATORS

Firefighter breathing air

replenishment systems . . . . . . . . . . . . . . . . . .F 501.8 Fuel gas . . . . . . . . . . . . . . . . . . .507.20, 507.21, 507.22,

1202.1, 1208.8, 1210.9, 1215.1.3 Medical gas and

medical vacuum . . . . . . . . . . . . . . . . . . . . . .1321.10.2 Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .608.2 PRESSURE-RELIEF VALVES

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224.0

Differential,

backflow prevention . . . . . . . . . . .603.3.7, Table 603.2

Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .608.5

Firefighter breathing

air replenishment systems . . . . . . . . . . . . . . .F 501.1,

F 501.8, F 701.3

Medical gas and medical vacuum . . . . .1308.2, 1308.3,

1310.4, 1316.1

Water Heaters . . . . . . . . . . . . . . . . .504.4, 504.6, 505.2

Water Supply . . . . . . . . . . . . . . .608.2 – 608.4, E 302.5 PRIMARY SETTLING TANKS . . . . . . . . . . . . . . . . . . .902.1 PRIVATE OR PRIVATE USE, DEFINITION . . . . . . . . .218.0 PRIVATE SEWAGE

Capacity of system . . . . . . . . . .H 101.7, H 201.0, H 701.1

Construction . . . . . . . . . . . . . . . . . . . .H 501.3, H 601.9,

H 701.3, H 801.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218.0

Design . . . . . . . . . . . . . . . . .H 101.6, H 501.2, H 501.11,

H 901.4, H 901.7

Disposal systems . . . . . . . . . .218.0, 713.2, Appendix H

536 2022 CALIFORNIA PLUMBING CODE

General requirements . . . . . . . . . . . . . . . . . . . . .H 101.2

Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.0

Location . . . . . . . . . . . . . . .721.0, H 101.8, Table H 101.8 PRIVATE WATER SUPPLY . . . . . . . . .602.2, 602.4, E 302.1 PROHIBITED

Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.5

Concealed gas piping . . . . . . . . . . .1210.4.2, 1212.3.1,

1212.5.3, 1323.6

Concealment of defects . . . . . . . . . . . . . . . . . . . . .309.2

Concealment of work

before inspection . . . . . . . . . . . . . . . . . .105.0, 503.2,

1203.0, 1406.1

Connections

Sewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .714.3

Waste . . . . . . . . . . . . . . . . . .310.3, 404.2, 603.4.4,

805.1, 807.3, 810.1

Water . . . . . . . . . . . . . . . . .602.0, 603.4.4, E 502.3

Copper tubing, use of . . . . . . . . . . .903.2.2, 1208.6.4.2

Damage to drainage system . . . . . .305.1, 312.3, 312.6

Devices . . . . . . . . . . . . . . . . . . . . . . . . . .310.5, 1210.10

Direct drainage . . . . . . . . . . . . . . . . . . . .603.4.4, 805.1,

807.3, 810.1

Discharge . . . . . . . . . . . . . . . .509.1.2, 714.2, 1603.4.2,

K 104.2

Fittings . . . . . . . . . . . . . . . . . . . . . . .310.0, 315.2, 604.2

Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.5, 405.0

Food waste disposal,

connection to . . . . . . . . . . . . . . . . . . . . . . . . .1014.1.3

Fuel gas piping . . . . . . . . . . . . . . . .1208.6.4.3, 1210.3.4

Industrial waste disposal . . . . . . . . . . . . . . . . . . . .306.2

Installations . . . . . . . . . . . . . . . . . . . . . . . .312.2, 602.1

Joints and connections . . . . . . .315.2, 605.1.4, 605.6.2,

1321.12.3, 1322.7

Locations . . . . . . . . . . . . . . . . .415.4, 1210.3.4, 1503.6

Materials . . . . . . . . . . . . . . .F 801.4, H 501.10, H 501.13,

K 103.1.1, L 503.1.1

Medical gas and

medical vacuum piping . . . . . . . . . . . . . . . . .1323.3.1

Oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1213.1.6

Pipes in concrete or masonry . . . . . . . . . . . . . . . .312.2

Practices . . . . . . . . . . . . . . . . . . .102.4.1, 104.1, 106.0,

303.1, 305.1, 309.2,

310.0, 312.2, 312.6,

502.1, 602.0, 714.1,

1101.3, 1204.3, 1205.0,

1206.3, 1501.3,

K 101.3, L 302.1

Receptors, location of . . . . . . . . . . . . . . . . . . . . . .804.1

Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.4

Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004.0

Trough type urinals . . . . . . . . . . . . . . . . .405.2, E 501.5

INDEX

Urinals and water closets on a

combination waste and vent system . . . . . . . . .910.7 Vent termination . . . . . . . . . . . . . . . . . . . . . . . . . .906.3 Water piping . . . . . . . . . . . . . . . . . .312.6, 604.2, 720.1 PROPERTY LINE, TERMINATION OF VENT . . . . . . .906.2 PROTECTION FROM

Corrosion . . . . . . . . . . . . . . . . . . . .312.1, 312.4, 402.3,

402.6.2, 402.6.3, 506.9, 507.5, 508.1.2, 509.5.3, 509.7, 509.10.1, 509.10.1.2, 509.10.1.3, 603.5.14.1, 603.5.14.2, 609.3, 710.4, 710.8, 810.2, 811.2, 814.1, 1004.1, 1208.6.4.4, 1208.7.1.1, 1210.1.3, 1210.3, 1210.4.4, 1310.4, 1323.2, 1323.3, 1503.9.1, 1603.3, C 501.3, E 301.3.2, E 403.5, E 403.6, E 403.8.2, E 403.8.4,

E 502.7, F 501.4, H 501.3, H 501.13, K 105.2, K 106.2.2 Decay . . . . . . . . . . . . . . . . . . . . . . . . .1503.9.1, 1603.3,

H 501.3, K 105.2 Freezing . . . . . . . . . . . . . . . . . .312.6, 603.4.7, 1210.1.4,

1210.7.1, 1603.17, Seismic . . . . . . . . . . . . . . . . . . . . . . . . .507.2, 1323.4.5 PROTECTION OF

Animals and insects . . . . . . . . . . . . . . . . . . . . .1503.9.3 Fuel gas meters . . . . . . . . . . . . . . . . .1208.7.1, 1208.7.3 Piping materials and structures . . . . . . . . . . . . . .312.0,

314.4, 1210.1 Potable water supply . . . . . . . . . . . . . . . . . . . . . . .603.0 Trap seals . . . . . . . . . . . . . . . . . .1002.0, 1005.1, 1007.0 Water heaters . . . . . . . . . . . . . . . .504.3 – 504.6, 505.2,

507.2, 507.12 – 507.15 PSYCHIATRIC SERVICES . . . . . . . . . . . . . . . . . . . . . .322.0 PUBLIC OR PUBLIC USE, DEFINITION . . . . . . . . . . .218.0 PUBLIC SEWER, DEFINITION . . . . . . . . . . . . . . . . . .218.0 PUBLIC SHOWER FLOORS . . . . . . . . . . . . . . . . . . . .408.8 PUSH FIT FITTINGS . . . . . . . . . . . . . . . . . . .218.0, 605.1.3,

605.1.3.3, 605.2.1

– Q – QUALITY AND WEIGHT OF MATERIALS,

GENERAL REGULATIONS . . . . . . . . . . .301.2.1, 301.2.2,

301.3, 301.5 QUALITY OF FIXTURES . . . . . . . . . . . . . . . . . . . . . . .401.2 QUICK-DISCONNECT DEVICE, DEFINITION . . . . . .219.0

– R – RAINWATER

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220.0

Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . .1603.5.2

2022 CALIFORNIA PLUMBING CODE 537

INDEX

RAINWATER CATCHMENT

SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220.0, 601.3.3,

Chapter 16, Appendix K RAINWATER DIVERSION

VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1503.2.4 RAINWATER STORAGE TANK,

DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220.0 REAMING PIPES . . . . . . . . . . . . . .309.3, 605.1.1 – 605.1.2,

605.1.3.2, 605.1.3.3,

605.1.4, 609.1,

701.3.1, 705.3.1,

705.3.3, 903.3 RECEIVING LANDSCAPE, DEFINITION . . . . . . . . . . .220.0 RECEIVING TANKS OR SUMPS . . . . . . . . . . .710.2, 710.3,

710.7 – 710.10,

710.13.1 RECEPTORS

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220.0

Indirect waste . . . . . . . . . . . . . . . . . . . . . . .414.3, 801.2,

801.3.2, 801.3.3,

801.4, 801.6, 801.7,

804.0, 807.1,

810.4, 814.5,

902.2, 1303.4.1

Shower . . . . . . . . . . . . . . . . . . . . .408.1, 408.5 – 408.7 RECLAIMED (RECYCLED)

WATER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . 220.0,

601.3.3, 1505.0 RECYCLED WATER SUPPLY SYSTEM

Allowed . . . . . . . . . . . . . . . . . . . . . . .1505.1.1, 1505.1.2

Color and marking . . . . . . . . . . . . . . . . . . . . . . . .1505.7

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220.0

In buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1505.1

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . .1505.13.2.4 REDUCED PRESSURE DETECTOR FIRE

PROTECTION BACKFLOW ASSEMBLY . . . . . . . . . . . .Table 603.2, 603.3.9, 603.5.14 REDUCERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316.0 REFRIGERATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . .801.3 REGULATORS

Backpressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.9 Draft . . . . . . . . . . . . . . . . . .506.1.2, 509.12.3 – 509.12.5,

509.15 Firefighter breathing air . . . . . . . . . . . . . . . . . . . .F 501.8 Fuel gas supply . . . . . . . . . . . .507.20 – 507.22, 1202.1,

1208.3, 1208.8 – 1208.12, 1213.1.5, 1214.1, 1215.1.3, E 404.0, E 404.4, E 404.5.2 Medical gas and medical vacuum . . .1308.3, 1321.10.2 Water supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .608.2 RELIEF VENTS . . . . . . . . . . . . . . . . . . .907.0, 911.3, B 101.4

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .805.1

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220.0

Interceptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.4 REMOTE OUTLET, DEFINITION . . . . . . . . . . . . . . . . .220.0 RENDERERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.7 REPAIRING

Defective gas pipe, prohibited . . . . . . . . . . . . .1208.6.8 REPAIRS AND ALTERATIONS TO

PLUMBING AND DRAINAGE SYSTEMS . . . . . . . .102.4 REQUIRED

Air gaps or air breaks . . . . . . . . . . . . . . . . . . . . . . .801.2

Appurtenances . . . . . . . . . . . . . . . . .1505.10, 1506.9.3,

1602.9

Area of subsurface irrigation

fields and mulch basins . . . . . . . . . . . . . . . . . .1504.2

Drainage or sewer connections . . . . . . . . .304.1, 713.0

Filters . . . . . . . . . . . . . . . . . . . . . . . . .1506.9.5, 1603.19

Flushing devices . . . . . . . . . . . . . . . . . . . . . . . . . .413.1

Fuel gas pipe size . . . . . . . . . . . . . . . . . . . . . . . .1215.0

Fuel gas supply . . . . . . . . . . . . . . . . . . . . . . . . . .1214.0

Gravity drainage . . . . . . . . . . . . . . . . . . . . . . . . . .709.0

Hot and cold water . . . . . . . . . . . . . . . . . . . . . . .601.2.1

Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1406.0

Low-pressure cutoff . . . . . . . . . . . . . . . . . . . . . . . .609.9

Medical gas and

medical vacuum pipe size . . . . . . . . . . . . . . . .1323.1

Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104.0

Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103.3

Plumbing fixtures . . . . . . . . . . . . . . .422.0, Table 422.1

Tests . . . . . . . . . . . . . . . . .1502.2 – 1502.3.3, 1504.10,

1505.5, 1506.5, 1602.5

Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .901.2 RESPONSIBLE FOR TESTING . . . . . . . . . . . . . . . .105.2.5 RESTAURANT, GREASE INTERCEPTORS . . . . . . .1014.1 RETESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3.2 RISERS

Fuel gas . . . . . . . . . . . . . . .1208.6.7, 1210.1.7, 1210.4.4,

E 403.6, E 404.3

Medical gas and

medical vacuum . . . . . . . . . . . . . . .1323.3, 1323.13.2

Sewer . . . . . . . . . . . . . . . . . . . . . . . .E 504.6, E 504.6.2

Water . . . . . . . . . . . . . . . . . . . . . .220.0, 408.10, 610.1,

1502.3.3, A 103.1, A 106.1,

A 106.2, A 108.1, E 302.1,

E 302.4, E 503.2,

E 505.4, L 503.3.7 RODENTPROOFING . . . . . . . . . . . . . . . . . . . . . . . . .312.12 ROOF DRAINS . . . . . . . . . . . . . .220.0, 1101.12.1, 1101.12.2,

1101.15, 1102.0, Table 1103.1,

1106.3, 1107.2.1, 1603.15,

K 105.12 ROOF DRAINAGE . . . . . . . . . . . . . . . .1101.12, Appendix D

Combined . . . . . . . . . . . . . . . . . . . . . . . . .1101.12.2.2.2

Controlled-flow . . . . . . . . . . . . . . . . . . . . . . . . . . .1105.0

538 2022 CALIFORNIA PLUMBING CODE

Primary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.12.1

Secondary . . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.12.2

Separate piping . . . . . . . . . . . . . . . . . . . . .1101.12.2.2.1 ROOF GUTTERS . . . . . . . . . . . . . . . . . . . .1101.12.1, 1103.3,

Table 1103.3, 1602.6, 1602.7.2,

1603.15, 1603.20, K 103.2,

K 105.12, K 106.3 ROOF, TERMINATION OF

VENTS ABOVE . . . . . . . . . . . . . . .509.6.1, 905.4, 906.1,

906.3, 906.5, 906.7 ROOF WASHERS . . . . . . . . . . . . . . . . . . . . .220.0, K 106.2 ROUGHING-IN, DEFINITION . . . . . . . . . . . . . . . . . . . .220.0

– S – SADDLE, SLEEVE, BAND OUTLETS,

PROHIBITED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.1 SAFETY AND HEALTH . . . . . . . . . . . . . . . . . . . . . . . .102.5 SAFETY DEVICES . . . . . . . . . .504.4 – 504.6, 505.2, 608.0 SAND INTERCEPTORS . . . . . . . . . . . . . . . . . . . . . . .1016.0

Cleanout for . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .707.7

Construction and size . . . . . . . . . . . . . . . . . . . . .1016.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.3

Discharge . . . . . . . . . . . . . . . . . . . . . . . . .1009.7, 1016.1

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.5

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.6

Required . . . . . . . . . . . . . . . . . . . . . . . . .1009.1, 1016.1

Vent, required and

not required . . . . . . . . . . . . . . .902.1, 1002.1, 1016.4

Water seals . . . . . . . . . . . . . . . . . . . . . . .1009.3, 1016.4 SANITARY TEES,

PERMISSIBLE USE . . . . . . . . . . . . . . . . .706.2, C 601.3,

C 601.4 SCREW JOINTS . . . . . . . . . . . . . . . . . . . . . .1205.2, 1206.3 SCRUB SINK, DEFINITION . . . . . . . . . . . . . . . . . . . . . .221.0 SDR, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SEAL, TRAP . . . . . . . . . . . . . . . . .222.0, 315.1, 412.1.1, 413.4,

901.3, 912.2, 1005.0, 1007.0,

C 601.1, E 501.6 SEAM, WELDED, DEFINITION . . . . . . . . . . . . . . . . . .221.0 SECONDARY INTERCEPTORS . . . . . . . . . . . . . . . . .902.1 SECONDARY TEMPERATURE

LIMITING DEVICE . . . . . . . . . . . . . . . . . . . . . . . . . .505.2 SEDIMENT TRAPS . . . . . . . . . . . . . . . . . . .1210.7.2, 1212.9 SEEPAGE PITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 701.0

Abandoned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .722.2

Area of disposal . . . . . . . . . . . . . . . . . . . . . . . . .H 301.0

Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 701.1

Combination with disposal fields . . . . . . . . . . . .H 601.4

Connection to sewer prohibited . . . . . . . . . . . . . . .714.3

Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 701.3

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

INDEX

Location . . . . . . . . . . . . . . .721.0, H 101.8, Table H 101.8

Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .716.1

Multiple installations . . . . . . . . . . . . . . . . . . . . . .H 701.2

Soil absorption . . . . . . . . . . . .Table H 201.1(2), H 301.1 SELF-CLEANING TRAPS . . . . . . . . . . . . . . . . . . . . .1003.1 SEPARATE PLUMBING AND

DRAINAGE SYSTEMS . . . . . . . . . . . . . . . . . . . . . . .311.0 SEPARATE VENTING . . . . . . . . . . . . . . . . . . . .811.6, 906.3 SEPARATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1009.0 SEPTIC TANKS

Abandoned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .722.2

Capacity . . . . . . . . . . . . . . . . . .H 201.0, Table H 201.1(1)

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 601.7

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

Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 501.0

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Location of . . . . . . . . . . . . . . . . . .H 101.8, Table H 101.8

Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .716.1

Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 501.8 SERVICE, AUTHORITY TO RENDER GAS . . . . . . . .1205.0 SERVICES/SYSTEMS AND UTILITIES . . . . . . . . . . . . .310.12 SETTING FIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . .402.5 SETTLING TANKS . . . . . . . . . . . . . . . . . . . . . . . . . . . .902.1 SEWAGE

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Disposal of . . . . . . . . . . . . . .303.0, 709.0, 713.0, 714.0,

1014.1, 1503.2, E 301.1,

E 504.1, L 302.1 SEWAGE DISPOSAL

SYSTEMS, PRIVATE . . . . . . . . . . . . . . 1010.5.2, Appendix H

Abandoned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .722.2

Commercial food waste grinders . . . . . . . . . . . . . .714.4

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 101.6

Holding tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . .714.5

Inspection and testing . . . . . . . . . . . . . . . . . . . .H 1001.0

Location . . . . . . . . . . . . . . . . . . . . . . . . . . .307.0, 721.0,

H 101.8, Table H 101.8

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .715.0

Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .904.1 SEWAGE EJECTOR . . . . . . . . .221.0, 710.2, 710.3, 710.10 SEWAGE PUMP . . . . . . . . . . . . .221.0, 710.2, 710.3, 710.13 SEWERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 7

Abandoned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .722.0

Adjacent to walls . . . . .312.3, 715.1, 718.3, Table 721.1

Available . . . . . . . . . . . . . . . . . . . . . . . . . . .713.2, 713.4

Building, definition . . . . . . . . . . . . . . . . . . . . . . . . .204.0

Building, material of . . . . . . . . .701.0, Table 701.2, 715.0

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .719.0

Connection to, required . . . . . . . . . . . . . . .304.0, 713.0

Construction of . . . . . . . . . . . . . . . . . . . . .715.0 – 719.0

Damage to . . . . . . . . . . . . . . . . . . . . .305.1, 306.1, 714.1,

718.3, 811.1, 1009.1

2022 CALIFORNIA PLUMBING CODE 539

INDEX

Depth of . . . . . . . . . . . . . . . . . . . . . .312.3, 718.3, 720.1 Easements for . . . . . . . . . . . . . . . . . . . . . . . . . . . .721.2 Ejectors . . . . . . . . . . . . . . . . . . . . .710.2, 710.3, 710.10 Existing . . . . . . . . . . . . . . . . . . . . .102.4.1, 713.6, 715.3 Grade and support of . . . . . . . . . . . . . . . . .708.0, 718.0 Gray water . . . . . . . . . . . . . . . . . . . . .1503.0 – 1503.9.4 Independent system required . . . . . . . . . . . . . . . . .311.0 Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.0 Joints and connections . . . . . . . . . . . . . . . . . . . . .705.0 Location . . . . . . . . . . . . . . . . . . . . . .307.0, 312.3, 718.3,

720.0, 721.0, Table 721.1 Materials . . . . . . . . . . . . . . . . . . . . . .701.0, Table 701.2,

715.0, 720.1 Mobile home and

recreational vehicle parks . . . . . . . . .E 301.0, E 504.0 Must be on same lot as building . . . . . . . . .307.1, 721.1 Private sewage disposal systems . . . . . . . .713.0, 714.0 Prohibited connections . . . . . . . . . . . . . . .603.4.4, 714.2,

714.3, E 502.7 Reclaimed (recycled) water . . . . . . . . . . . . . . . .1505.11 Required . . . . . . . . . . . . . . . . . . . . . . . . . . .709.1, 713.0 Size of building . . . . . . . . . . . . . . . .Table 702.1, 703.2,

Table 703.2, 710.5, 717.0, Table 717.1, C 304.2, Table C 304.2, C 601.9 Storm water . . . . . . . . . . . . . . . . . . . . .1101.3, 1101.16.2 Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .718.2 Testing of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .723.0 Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .904.1 Water pipe in trench . . . . . . . . . . . . . . . . . .609.2, 720.0 SHALL, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SHEET LEAD . . . . . . . . . . . . . . . . . . . . . . . . .408.7, 408.7.3,

. . .718.2 Testing of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .723.0 Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .904.1 Water pipe in trench . . . . . . . . . . . . . . . . . .609.2, 720.0 SHALL, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SHEET LEAD . . . . . . . . . . . . . . . . . . . . . . . . .408.7, 408.7.3,

701.5, 906.6 SHIELDED COUPLINGS . . . . . .221.0, Table 313.3, 705.2.2 SHOCK ARRESTER, DEFINITION . . . . . . . . . . . . . . .221.0 SHORT TURN ¹ ⁄4 BEND, PROHIBITED . . . . . .310.5, 706.0 SHOULD, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SHOWERS

Approved standards . . . . . . . . . . . . . . . . . . . . . . .408.1

Control valves . . . . . . . . . . . . . . . . . . . . . .408.3, 601.2.1

Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . .1503.8.2.2

Finished curb or threshold . . . . . . . . . . . . . . . . . . .408.5

Gang . . . . . . . . . . . . . . . . . . . .209.0, 408.3.1, 408.3.2,

L 201.0, L 402.6.1

Mobile home and recreational

vehicle parks . . . . . . . . . . . . . . . . . . . . . . . . . .E 501.7

Pans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .408.7

Public floors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .408.8

Receptors . . . . . . . . . . . . . . . . . . . .408.5, 408.6, 408.7

Stall or compartment . . . . . . . . . . . . . . . . . . . . . . .408.6

Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .408.7.5

Valve and head location . . . . . . . . . . . . . . . . . . . .408.9

Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . .417.2, 417.3

Waste outlet or drains . . . . . . . . . . . . . . . . .317.1, 408.4

Water consumption . . . . . . . . . . . . . . . . .408.2, L 402.6 SHUTOFF VALVES

Fuel gas . . . . . . . . . . . . . . . . .507.8, 509.5.7.1, 1208.13,

1210.3.3.1, 1210.8.2, 1210.11,

1212.3.1, 1212.3.2, 1212.5.3,

1212.6, 1212.7, 1212.9,

1213.2.5, 1213.6.1.4, E 402.3,

E 402.4.2, E 403.0, E 403.9,

E 403.13, E 404.5

Medical gas and

medical vacuum . . . . . . . . .1310.3.2, 1312.2, 1314.6,

1314.7, 1314.8,

1314.11, 1327.2

Sewage. . . . . . . . . . . . . . . . . . . . . . . 710.12.1, 710.13.2

Water . . . . . . . . . . . . . . . . . .504.6, 606.2, 606.3, 608.4,

609.9, E 302.3, L 402.3.1, L 404.6,

L 410.3, L 413.4 SIGNAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1505.12

Access door . . . . . . . . . . . . . . . . . . . . . . . . . . .1505.8.2

Commercial, industrial, institutional,

and residential . . . . . . . . .1501.9.1, 1505.12.1, 1604.2

Equipment room . . . . . . . . .1501.9.2, 1505.12.3, 1604.3

Tank type toilet . . . . . . . . . . . . . . . . . . . . . . . .1505.12.2 SIMPLE SYSTEM

Clothes washer . . . . . . . . . . . . . . . . . . . . . . . . .1503.1.2

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SINGLE-STACK VENT SYSTEMS . . . . . . . . . . . . . .C 601.0 SINKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .420.0

Approved standards . . . . . . . . . . . . . . . . . . . . . . .420.1

Clinical . . . . . . . . . . . . . . . . . . . . . .205.0, 413.1, 1303.7

Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . .421.0, B 101.2

Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .909.1

Laundry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .420.4

Prohibited types . . . . . . . . . . . . . . . . . . . .405.3, B 101.2

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .420.4

Special use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .406.2

Three-compartment . . . . . . . . . . . . . . . . . . . . . . .1001.2 SIZE OF

Building sewers . . . . . . . . . . . .703.2, 717.0, Table 717.1

Cesspools . . . . . . . . . . . . . . . . . . . . . . . . . .Appendix H

Chimneys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.5.5

Circuit venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .911.0

Combination waste

and vent piping . . . . . . . . . . . . . . . . .910.0, Appendix B

Combustion air openings . . . . . . . . . . . . .506.3 – 506.5

Condensate pipe . . . . . . . . . . . . . . . .814.3, Table 814.3

Disposal fields . . . . . . . . . . . . . . . . . . . . . . .Appendix H

Drainage piping . . . . . . . . . . . . . . . .Table 702.1, 703.0,

Table 703.2, C 304.0,

E 302.2, E 504.4

FOG disposal systems . . . . . . . . . . . . . . . . . . . . .1015.3

540 2022 CALIFORNIA PLUMBING CODE

Fuel gas piping systems . . . . . .1208.4, 1214.0, 1215.0,

E 403.2, Table E 403.2

Fuel gas vents . . . . . . . . . . . . . . . . . . .509.6.2, 509.7.4,

509.10.2, 510.0

Flushometer valves and tanks . . . . . . . . .610.10, 610.11

Gray water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1503.8

Grease interceptors . . . . . . . . .1014.2.1, Table 1014.2.1,

1014.3.6, Table 1014.3.6

Hanger rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .313.6

Indirect waste pipes . . . . . . . . . . . . . . . . .801.3.1, 803.3

Leaders, conductors,

and storm drains . . . . . . . . . . .1103.0, Table 1103.1,

Table 1103.2, Table 1103.3

Louvers, grilles, and screens . . . . . . . . . . . . . . . . .506.8

Medical gas and medical vacuum pipe . . . . . . .1323.1.1

Oil tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E 403.12

Pipe cleanouts . . . . . . . . . . . . . . . . .Table 707.1, 707.10

Rainwater catchment systems . . . . . . . .1602.6, K 106.5

Reclaimed (recycled)

water piping . . . . . . . . . . . . . . . . . . . . . . . . . . .1502.6

Roof drainage . . . . . . . . . . . . . . . .1101.12, Table 1103.2,

Table 1103.3, 1105.1,

1603.16, Appendix D, K 106.4

Sand interceptors . . . . . . . . . . . . . . . . . . . . . . . . .1016.3

Seepage pits and disposal fields . . . . . . . . . . . .H 301.0

Septic tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 201.0

Single-stack vent systems . . . . . . . . . . . . . . . . .C 601.0

Traps . . . . . . . . . . . . . . . . . . .702.1, Table 702.1, 910.4,

1003.3, 1006.1, 1101.15.2

Vacuum drainage systems . . . . . . . . . . . . . . . .C 501.2.1

Vent pipes . . . . . . . . . . . . . .Table 703.2, 710.10, 810.1,

Table 810.1, 904.0, 908.1.1,

908.1.2, 908.2.2, C 401.0

Water heaters . . . . . . . . . . . . . . . . .501.1, Table 501.1(1)

Water piping . . . . . . . . . . . . . . . . . . .610.0, Table 610.3,

Table 610.4, Table A 103.1,

Appendix A, E 302.2

Water softener connections . . . . . . . . . . . . . . . . . .611.4

Wet venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.0 SLAUGHTERHOUSES . . . . . . . . . . . . . . . . . . . . . . . .1010.0 SLIP JOINTS . . . . . . . . . . . . . . . . . . . . . . . . .221.0, 402.10,

509.10.9, 605.14,

705.9.1, 705.9.3, 1003.2 SLOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(see Grade) SOIL PIPE . . . . . . . . . . . . . . . .221.0, 310.2, 310.4, 402.6.1,

402.6.3, Table 701.2, 701.2(6),

722.2, 1002.4 SOIL POROSITY . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 101.2 SOLDER, BUSHINGS . . . . . . . . . . . . . . . .701.7, Table 701.7 SOLDER JOINTS . . . . . . .212.0, 309.2, Table 313.3, 402.6,

605.1.3.1, 605.1.4, 605.16.1,

705.3.3, 705.10.1, 705.10.2

INDEX

SPACING

Pipe supports . . . . . . . . . . . .313.0, Table 313.3, 1210.3.5,

1210.3.5.1, Table 1210.3.5.1, 1323.4, Table 1323.4.4, 1327.6, Table 1327.6 Trenching and leaching beds . . . . . . . . . . . . . . .H 601.9 SPECIAL FIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . .406.0 SPECIAL VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . .909.0 SPECIAL WASTE PIPE . . . . . . . . . .(see Industrial wastes) SPECIAL WASTES

Acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811.2 Chemical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811.0 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811.0 High temperatures . . . . . . . . . . . . . . .810.1, Table 810.1 Laundries, slaughterhouses,

bottling establishments, and auto wash racks . . . . . . . .711.0, 1010.0 – 1013.0 SPECIFIC GRAVITY,

NATURAL GAS . . . . . . . . . . . . . . . . . . . . . . . . . . .1214.1 SPECIFICATIONS

FOR MATERIALS . . . . . . . . . . . . . . . . . .301.2, Table 1701.1 STACKS . . . . . . . . . . . . . .221.0, 317.1, 706.2, 711.1, 906.1,

907.0, 911.3, 1101.16.2,

C 304.3, C 304.4,

C 401.0, C 601.0 STAINLESS STEEL PIPE . . . . . . .Table 313.3, Table 604.1,

605.13, Table 701.2, 705.7 STANDPIPE,

CLOTHES WASHER . . . . . . . . . . . . . . . . . . . . . . . . .804.1 STATION INLETS

AND OUTLETS . . . . . . . . .221.0, 1305.3, Table 1305.3,

Table 1323.1.5(1),

1323.1.2, 1315.0 STEAM EXHAUST CONDENSER

OR BLOW OFF . . . . . . . . . . . . . . . . . . .810.0, Table 810.1 STERILE EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . .806.0 STORAGE TANKS

Alternate water sources . . . . . . .1503.3, 1505.4, 1506.4 Hot water . . . . . . . . . . . . . . . . . . . . .505.2, 608.6, 608.7,

L 502.2, L 503.3.2, L 503.3.7 Potable water . . . . . . . . . . . . . . . . . . . . . . . . . . .E 502.7 Rainwater . . . . . . . . . . . . . . . . . . . . . .1602.7.3, 1603.0,

K 102.2, K 103.3, K 105.0 Vacuum drainage . . . . . . . . . . . . . . . . . . . . . .C 501.2.1 Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1603.13 STORM DRAINAGE SYSTEMS . . . . .Chapter 11, Appendix D STORM DRAINS . . . . . . . . . . . . . . . .221.0, 1101.4.4, 1101.6,

1101.11, 1101.12, 1101.13, 1101.15, 1103.0, 1104.1 STORM SEWERS . . . . . . . . . . . . . . . . . . . . . . .221.0, 715.3,

1101.2, 1101.4.5, 1101.12.2.2.2, 1101.13.1, 1103.2, 1104.1

2022 CALIFORNIA PLUMBING CODE 541

INDEX

STRAINERS

AND CONNECTIONS . . . . . . . . . . . . . . . . . .407.5, 408.4,

810.4, 1012.1, 1102.2 S-TRAP PROHIBITED . . . . . . . . . . . . . . . . . . . . . . . .1004.1 STREET MAIN;

(SEE WATER MAIN) . . . . . . . . . .225.0, 608.1, 608.3, 610.7,

Table 721.1, Table 1503.4, A 104.2,

A 104.4, Table H 101.8 STRUCTURAL

CONDITION SAFETY . . . . . . . . . . . . . . . . .312.2, 312.11 SUBMETER

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.2.2 SUBMITTAL OF PLANS . . . . . . . . . . . .103.3, 104.3, 104.3.2,

104.3.3, 301.5.3, 811.1, 910.2, 1105.1, 1304.3, 1505.2.1, 1602.2, C 301.1, C 501.1, E 101.2, H 501.1,

K 101.3.1 SUBSOIL DRAINS . . . . . . . . . . . . . . . . . . . .221.0, 1101.4.6,

Table 1101.4.6, 1101.6,

1101.8, 1101.9 SUBSOIL

IRRIGATION FIELDS . . . . . . . . . . . . . . . . .221.0, 1503.2.1,

Table 1503.4, 1504.0 – 1504.5,

Table 1504.5.3 SUBSTITUTE MATERIALS . . . . . . . . . . . . . . . . . . . . .301.3 SUBSURFACE

DISPOSAL FIELDS . . . . .1503.2.1, Table 1503.4, 1504.0,

1504.1, 1504.4, 1504.5,

1504.5.1, 1504.5.3, Appendix H SUBSURFACE

IRRIGATION FIELDS . . . . .221.0, 1503.2.1, Table 1503.4,

1504.0 – 1504.5,

Table 1504.5.3 SUDS RELIEF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .711.0 SUMPS

Boiler room, installation . . . . . . . . . . . . . . .810.1, 810.3

Building, backwater

devices . . . . . . . . . . . . . . .710.1, 710.3, 710.4, 710.6

Building drainage

systems below sewer level . . . . . . . . . . . . . . . . . . .710.2

Condensers . . . . . . . . . . . . . . . . . . . .810.0, Table 810.1

Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .810.2

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Macerating toilet systems . . . . . . . . . . . . . . . . .710.13.1

Pump connection permitted . . . . .710.2 – 710.5, 710.9,

805.1, 1101.6.2, 1101.7

Pump discharges, conversion

to fixture units . . . . . . . . . . . . . . . . . . . . .702.3, 710.5

Sewage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .710.2

Sizing, sewage

ejector and pumps . . . . . . . . . . . . . . . . . . . . . . .710.3

Storm drainage . . . . . . . . . . . .1101.6.2, 1101.6.3, 1101.7,

1101.10, 1101.11, 1101.14 Vents . . . . . . . . . . . . . . . . . . . . .710.7, 710.10, 710.13.3,

810.1, Table 810.1 Water supply inlets . . . . . . . . . . . . . . . . . . . . . . .603.5.5 SUPPLY, WATER

Fittings, fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . .402.7 Fixture, definition . . . . . . . . . . . . . . . . . . . . . . . . . .208.0 Fixture units . . . . . . . . . . . . . . . . . . .610.3, Table 610.3,

610.7 – 610.10, Table 610.10, Table A 103.1, C 303.2, C 501.5, E 302.1, E 302.2,

E 302.2.2, L 402.3.1 Hot water . . . . . . . . . .601.2.1, 602.1, 603.4.5, 603.5.10,

608.7, 609.1, 609.4, 610.3, Table 610.3, 610.12.1, 610.12.2,

Table A 103.1, A 105.3, Table C 303.2, L 502.5,

L 502.7, L 502.7.3 Materials . . . . . . . . . . . . . . . . . . . . .604.0, Table 604.1,

1503.9.2 – 1503.9.4, 1505.6, 1506.6, 1602.7, K 103.4 Nonpotable water . . . . . . . . . . . .601.3, 603.5.11, 1506.6 Pipe, size of . . . . . . . . . . . . . . . . . . .610.0, Table 610.3,

Table 610.4, Table A 103.1,

Table C 303.2, Appendix M

Potable water, protection . . . . . . . . . .409.5, 410.2, 412.2,

414.2, 419.3, 602.0, 603.0, 1303.5, 1503.3, 1505.4, 1506.4,

1602.4, E 502.3, K 101.9,

K 102.2, L 411.2

Pressure . . . . . . . . . . . . . . . . .608.0, 1603.14, A 104.3,

E 302.2.3, E 502.5, K 105.11

Quality . . . . . . . . . . . . .601.2.1, 1501.7, 1505.14, 1506.7,

1506.9.2, 1601.7, 1603.5,

Table 1603.5, 1603.16, E 302.1,

K 101.7, K 104.3, K 104.4

Quantity . . . . . . . . . . . . . . . . . . . .413.1 – 413.4, 416.2,

419.3, 610.3, E 302.1

Risers . . . . . . . . . . . . . . . . . . . . . . . . . .408.10, E 302.2

Tanks, water . . . . . . . . . . . . . . . . . . . . . .603.5.5, 608.1

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609.4

Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .606.0 SUPPORTS . . . . . . . . . . . . . . . . .221.0, 313.0, Table 313.3,

402.4, 507.3, 507.3.1, 507.4,

507.19, 509.5.8, 509.6.4, 509.7.5,

509.10.8, 609.1, 718.2, 906.4,

1208.7.2, 1208.15.1, 1210.3,

1210.3.5, Table 1210.3.5.1, 1323.4,

1323.4.4, Table 1323.4.4,

E 402.4, E 404.2, F 901.4,

H 601.3, L 501.2

542 2022 CALIFORNIA PLUMBING CODE

SURFACE WATER,

DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . .306.2, 714.2,

811.1, 1101.1, 1101.11 SURGE TANKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0 SWIMMING POOLS, SPAS,

AND HOT TUBS . . . . . . . . . . . .603.5.5, 603.5.20, 813.0,

L 407.1, L 503.3.6 SYSTEMS

Chimney venting . . . . . . . . . . . . . . . .509.5.5, 509.6.2.4

Circuit venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .911.0

Clothes washer . . . . . . . . . . . .205.0, 1503.1.1, 1503.2.2

Combination waste and vent . . . . . . . . . . .205.0, 910.0,

Appendix B

Complex . . . . . . . . . . . . . . . . . . . . . . . . .205.0, 1503.1.3

Defective, testing of . . . . . . . . . . . . . . . . . . . . . .105.3.1

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1601.2

Dialysis water . . . . . . . . . . . . . . . . . . .603.5.18.1 , 614.0

Direct-vent . . . . . . . . . . . . . . . . . . . . . .509.6.1, 509.8.2

Durham, definition . . . . . . . . . . . . . . . . . . . . . . . . .206.0

Engineered . . . . . . . . . . . . . .509.10.7.1, 912.0, C 201.1

Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.22,

509.3.4, 509.6.1

Fire protection (protection from) . . . . . . . . . . . .603.5.14

Firefighter breathing

air replenishment . . . . . . . . . . . . . . . . . . .Appendix F

Firestop . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 14

FOG disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . .1015.0

Fuel gas piping . . . . . . . . . . . . . . . .507.18, Chapter 12,

E 401.0 – E 406.4

Fuel gas venting . . . . . . . . . . .509.0, Table 509.4, 510.0

Gray water . . . . . . . . . . . . . . . . . . . . . . .601.3.3, 1503.0

Independent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311.0

Lightning protection . . . . . . . . . . . . . . . . . . . . . . .1211.5

Macerating toilet . . . . . . . . . . . . . . . . . . . . . . . . .710.13 Mechanical draft . . . . . . . . . . . . . . . . . . .509.3.3, 509.8,

509.10.3.2, 509.10.6 Medical gas

and medical vacuum . . . . . . . . . . .319.0, Chapter 13 Natural draft venting . . . . . . . . . . . . . . . . . . . .509.6.2.1 On-site treated nonpotable . . . . . . . . . . .601.3.3, 1506.0 Plumbing vent, definition . . . . . . . . . . . . . . . . . . . .218.0 Plumbing venting . . . . . . . . . .710.7, Chapter 9, C 401.0 Potable water

(definition) . . . . . . . . . . . . . . . . . . .218.0, Appendix A,

E 302.1 – E 302.8 Private sewage disposal . . . . . . . . .713.2, 713.3, 713.5,

714.0, 716.1, 723.1, 904.1, Appendix H Pure water process . . . . . . . . . . . . . . . . . . . . . .603.5.18 Rainwater catchment . . . . . 220.0, 601.3.3(4), Chapter 16,

Appendix K, L 501.0 Reclaimed (recycled) . . . . . . . . . . . . . . .601.3.3, 1503.3,

1505.0, 1506.4, 1602.4

INDEX

Sanitary drainage . . . . . . . . . . . . . . . . . . . . . .Chapter 7,

E 301.0 – E 301.4.1,

E 504.1 – E 504.5 Simple . . . . . . . . . . . . . . . . . . . . . . . . . . .221.0, 1503.1.2 Single-stack vent . . . . . . . . . . . . . . . . . . . . . . . .C 601.0 Sprinkler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .612.0 Storm water drainage . . . . . . . .Chapter 11, Appendix D Ultraviolet water treatment . . . . . .Table 611.1, 1506.9.2,

K 104.4.2, N 105.1 Vacuum drainage . . . . . . . . . . . . . . . . . . . . . . . .C 501.0 Ventilation . . . . . . . . . . . . . . . . . . . . . . .506.1.3, 506.7.3 Wet vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.2.5

– T – T RATING . . . . . . . . . . . . . . . . . . . . . . . . . . . .222.0, 1404.3,

1405.3, 1406.4 TAILPIECES

Connection . . . . . . . . . . . . . .414.3, 419.2, 910.5, 910.6 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222.0 Maximum length of . . . . . . . . . . . . . . . . . . . .910.5, 1001.2 Sizes . . . . . . . . . . . . . . . . . .407.5, 408.4, 409.2, 420.4,

B 101.3, B 101.5, B 101.6.1 TANKS

Dosing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H 601.8 Expansion . . . . . . . . . . . . . . . . . . . .608.2, 608.3, 812.1 Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208.0, 402.4,

413.1, 601.2, A 104.1 Flushometer . . . . . . . . . . . . . . . . . . . . . .610.11, A 106.3 Hot water storage . . . . . . . . . . . . . .608.3, 608.6, 608.7,

L 502.2, L 503.3.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . .710.8, 810.2

Oil . . . . . . . . . . . . . .1017.1, E 403.12, E 403.13, E 404.6

Rainwater storage . . . . . . . . . . . . . . . .1602.7.3, 1603.6,

K 102.2, K 103.3, K 105.0

Reclaimed water storage . . . . . . . . . . . . . . . . . . .1505.4

Septic . . . . . . . . . . . . . . . . . . . . . . . . . . . .714.3, 716.1,

722.2 – 722.4,

Appendix H

Sump or receiving . . . . . . . . . . . .710.2, 710.7 – 710.10,

810.2, 1101.7

Surge . . . . . . . . . . . . . . . .221.0, 1503.2.1, Table 1503.4

1503.9.1, 1504.10

Urinal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.5.2

Water closet . . . . . . . . . . . . . . . . . .404.2, 405.1, 601.2,

603.5.2, 603.5.3, L 402.2

Water supply . . . . . . . . . . . . . . . . . . . . . . .608.1, 608.6,

608.7, E 502.7, E 506.1 TELEPHONE AND DATA

EQUIPMENT ROOMS . . . . . . . . . . . . . . . . . . . . . . .310.13 TEMPERATURE AND

PRESSURE-RELIEF VALVES . . . . . . . . . . . .504.6, 505.2 TEMPERATURE-LIMITING DEVICES . . . . . . .407.3, 408.3,

409.4, 410.3, 504.5

2022 CALIFORNIA PLUMBING CODE 543

INDEX

TEMPORARY USE OF GAS . . . . . . . . . . . . . . . . . . .1207.0 TERMINATION OF VENTS . . . . . . . . . . . . . .509.6.1, 509.8

509.8.2, 906.0, H 501.11 TESTING AGENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . .222.0 TESTS

Air . . . . . . . . . . . . . . . . . . . . . . . .105.3, 105.3.1, 609.4,

712.3, 723.1, 1107.2.2, 1107.2.3, 1213.1.6 Alternate materials and methods . . . . . . . . . . . . . .301.3 Building sewer . . . . . . . . . . . . . . . . . . .102.4.1, 105.2.1,

105.2.1.2, 723.0 Cross-connection . . . . . . . . . . . . . . . . . . . .1505.13.2.2 Exceptions . . . . . . . . . . . . . . . . . . . . . . .105.3, 1107.2.3 Final . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .712.1 Fuel gas piping . . . . . . . . . . . . . . . . . . . . . . . . . .1213.0 Gauges . . . . . . . . . . . . . . . . . . . . . . . . .318.0, 1203.3.2 Percolation . . . . . . . . . . . . . . . . . . . . . . .1504.3, H 401.0 Reclaimed (recycled) water . . . . . . . . . . .Table 1505.15 Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3 Responsibility for . . . . . . . . . . . . . . . . . . . . . . . .105.2.5 Shower receptors . . . . . . . . . . . . . . . . . . . . . . . .408.7.5 Storm drainage . . . . . . . . . . . . . . . . . . . . . . . . . .1106.0 Testing agency . . . . . . . . . . . . . . 222.0, 301.3.1.1, 505.4,

610.2, 1406.4 Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609.4, 712.2,

1107.2.1, 1107.2.3 Water supply systems . . . . . . . . . . . . . .105.2.1.1, 609.4 THREADED JOINTS . . . . . . . . . . . .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, 1322.5 THREE SINGLE

COMPARTMENT SINKS . . . . . . . . . . . . . . . . . . . . .1001.2 TOILET FACILITY, DEFINITION . . . . . . . . . . . . . . . . . . .222.0 TOILET ROOM, DEFINITION . . . . . . . . . . . . . . . . . . . .222.0 TOILETS . . . . . . . . . . . . . . . . . . . . . . . . .(see Water closets) TOILETS, FAMILY

OR ASSISTED - USE FACILITY . . . . . . . . . . . . . .422.1.1 TRACER WIRE . . . . . . . . . . . . . . . . . . .604.10.1, 1210.1.7.2 TRANSITION GAS RISER . . . . . . . . . . . . . .222.0, 1210.4.4 TRANSITION JOINTS . . . . . . . . . . . . . . . . . . . . . . . .705.9.4 TRAPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 10

Arms . . . . . . . . . . . . . . . . . .222.0, Table 702.1, 707.14,

1002.2, Table 1002.2, 1002.3 Bar and fountain sinks . . . . . . . . . . . . . . . . .801.4, 902.2 Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1008.0 Bottle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004.1 Condensers and sumps . . . . . . . . . . . . . . . . . . . . .810.1 Crown weir . . . . . . . . . . . . . . . . . . .222.0, 409.6, 905.5,

1001.2, 1002.2, 1002.4 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222.0 Drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004.1

Floor drains . . . . . . . . . . . . . . . . . . . . . . .704.3, 1003.1,

1006.0, 1007.1

Food storage areas . . . . . . . . . . . . . . . . .418.4, 801.3.2

For three-compartment

sinks or three lavatories . . . . . . . . . . . . . . . . . .1001.2

From fixture, distance of . . . . . . . . . . . . . . . . . . . .1001.2

From vent, distance of . . . . . . . . . .1002.2, Table 1002.2

Grease interceptors . . . . . . . . . . . . . . . . . . . . . .1014.1.1

Indirect wastes . . . . . . . . . . . . . . . . . . . . . . . . . . .803.3

Integral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1001.2

Island sinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .909.1

Materials . . . . . . . . . . . . . . . . . . . . .807.2, 906.6, 1003.1

Minimum size . . . . . . . . . . . .702.1, Table 702.1, 1003.3

Nonwater urinals . . . . . . . . . . . . . . . . . . . . . . . . .412.1.1

Prohibited types . . . . . . . . . . . . . . . . . . . . . . . . . .1004.0

Required . . . . . . . . . . . . . . . . . . . . . . . . .1001.0, 1101.15

Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222.0, 412.1.1,

912.2, 1005.0,

1007.1, C 601.1, E 501.6

Seal primer . . . . . . . . . . . . . . . . . . . . . . . .222.0, 1007.1

Separate for each fixture . . . . . . . . . . . . . . . . . . .1001.2

Slip joints . . . . . . . . . . . . . . . . . . . . . . . .705.9.1, 1003.2

Standpipe receptors . . . . . . . . . . . . . . . . . . . . . . .804.1

Storm drains and leaders . . . . . . . . . . . . . . . . . .1101.15

Unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315.1

Unit loading . . . . . . . . . . . . . . . . . . .702.0, Table 702.1,

Table 703.2

Vacuum drainage system . . . . . . . . . . . . . . . . . .C 501.0

Vents for . . . . . . . . . . . . . . . . .Table 703.2, 810.1, 901.0,

905.2, 905.5, 908.2.1,

909.1, 1002.0, Table 1002.2 TREATED GRAY WATER, DEFINITION . . . . . . . . . . . . .222.0 TRENCHING, EXCAVATION,

AND BACKFILLING . . . . . . . . . . . . . . . . . .314.0, 1203.2,

1210.1.1 – 1210.1.2.1, 1323.5.1 TROUGH URINALS,

PROHIBITED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .405.2 TUBING, COPPER . . . . . . . . . . .Table 604.1, 604.3, 604.4,

605.1, 609.1, 609.3, 701.2,

Table 701.2, 903.2, 1208.6.4.3,

A 105.2, E 403.5 TUNNELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314.2 TYPE B

GAS VENTS . . . . . . . . . . . . . . .224.0, 509.1, Table 509.4,

509.5.5, 509.6.1, 509.6.2.1,

509.6.2.2, 509.6.3.2,

Table 509.7.3.4(1), 509.7.3.5,

509.10.1.1, 509.10.1.2,

509.10.7.2, 509.10.12, 510.1.6,

510.1.10, 510.2.2, 510.2.15,

510.2.19, 510.2.20,

510.2.22, Appendix G

544 2022 CALIFORNIA PLUMBING CODE

TYPE BW GAS VENTS . . . . . . . .224.0, Table 509.4, 509.6.1,

TYPE L GAS VENTS . . . . . . . . . . . . . . .224.0, Table 509.4,

509.6.1, 509.6.2.2,

Table 509.7.3.4(1), 509.10.1.1,

509.10.1.2, 509.10.12

– U –

UNDERGROUND

Backflow prevention devices . . . . . . . . . . . . . . .603.4.9

Building storm drains . . . . . . . . . . . . . . . . . . . . .1101.4.4

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

Table 701.2, 720.0

Fuel gas piping . . . . . . . . . . . . . . . .1203.2, 1208.6.3.3,

1208.6.4.4, 1210.1,

E 401.2, E 402.2, E 403.7,

E 403.8, E 403.8.4

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

Medical gas and

medical vacuum piping . . . . . . . . . . .1323.2, 1323.5.1

Stop-and-waste valves . . . . . . . . . . . . . . . . . . .603.5.17

Storm water piping . . . . . . . . . . . . . . . . .1101.4, 1101.4.2

Tanks . . . . . . . . . . . . . . . . . . . . . . . . .1503.9.1, 1603.9,

E 403.11, K 105.0

Unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315.1

Vent material . . . . . . . . . . . . . . . . . . . . . . . .903.1, 903.2

Water piping . . . . . . . . . . . . . . . .604.3, 609.9, 1506.9.4

UNIONS

Dielectric . . . . . . . . . . . . . . .605.15, 605.16.1, 605.16.3

Fuel gas piping . . . . . . . . . . . . . . . . . . .1212.6, E 404.2

Location . . . . . . . . . . . . . . . . . . . . . .315.1, 609.5, 710.6

Medical gas and

medical vacuum piping . . . . . . . . . . . . . . . . . .1322.7

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

Where allowed . . . . . . . . . . . . . . . . . . . . . . . . . . . .315.1

UNIT LOADING OF TRAPS . . . . . . . .702.1, Table 702.1(1)

UNITS, FIXTURE . . . . . . . . . . . . . . . . . . .(see Fixture, units)

UNLAWFUL CONNECTIONS . . . . . . .404.2, 602.0, 1205.2

UNSANITARY, DEFINITION . . . . . . . . . . . . . . . . . . . .223.0

UPC, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . .223.0

URINALS . . . . . . . . . . . . . . . . . .402.5, 402.6, 405.2, 412.1,

412.1.3, 412.1.4, 412.1.4.1, 412.2,

413.0, 418.3, 601.2, 603.5.1,

603.5.2, 707.4, 710.3, 910.7,

1003.1, 1014.1, 1014.3.2.1,

1501.9, 1505.1, 1506.1, 1506.9.2,

1506.9.5, 1602.1, 1603.10, 1603.15,

1603.19, 1604.2, E 501.2,

E 501.5, K 105.11, L 402.3

USE OF ALTERNATE MATERIAL . . . . . . . . . . . . . . . .301.3

INDEX

USER OUTLET, DEFINITION . . . . . . . . . . . . . . . . . . .223.0

– V – VACUUM BREAKERS . . . . . . . . . . . .224.0, 412.2, 601.3.4,

Table 603.2, 603.3.2, 603.3.5, 603.3.6, 603.4.4, 603.5.1, 603.5.5, 603.5.6, 603.5.7, 603.5.9, 603.5.13, 603.5.15, 603.5.16, 1303.5, C 501.3, E 505.4, E 506.1 VACUUM DRAINAGE SYSTEMS . . . . . . . . . . . . . . .C 501.0 VACUUM RELIEF VALVES . . . . . . . . . . . . . . . . .224.0, 504.6,

608.7, 1602.9 VACUUM SYSTEM –

LEVEL 1, DEFINITION . . . . . . . . . . . . . . . . . . . . . . .224.0 VALIDITY OF CODE . . . . . . . . . . . . . . . . . . . . . . . . . . .101.5 VALVES

Backwater . . . . . . . . . . . . . . . . . . . .204.0, 710.1, 710.3,

710.6, 1006.1, 1503.2.3, 1503.9.1, 1603.10, K 105.4 Ball . . . . . . . . . . . . . . . . . . . .606.1, 606.4, 710.4, 710.6 Bathtub filler . . . . . . . . . . . . . . . . . . . . . . . . . . . . .409.5 Check . . . . . . . . . . . . . . . . . . . .603.5.10, 608.3, 710.4,

710.12.1, 710.13.2, 1004.2, 1208.12.1, 1309.11, 1311.5, 1313.5, F 701.3 Combination stop-and-waste . . . . . . . . . . . . . .603.5.17 Combination temperature

and pressure-relief . . . . . . . . . . . . . . . . .505.2, 608.3 Combination thermostatic/

pressure balancing . . . . . . . . . . . . . . . . .205.0, 408.3

Control . . . . . . . . . . . . . . . .408.9, 601.2.1, 606.5, 606.6,

1303.1, 1306.2, C 501.3

Diaphragm-type . . . . . . . . . . .507.22, 1208.8.4, 1208.12

Excess flow . . . . . . . . . . . . . . . . . . . . . . . .207.0, 1209.0

Flow balancing . . . . . . . . . . . . . . . . . . . . . . . . . .L 501.7

Flush, definition . . . . . . . . . . . . . . . . . . . . . . . . . . .208.0

Flushometer . . . . . . . . . . . . . . . . .208.0, 411.2.2, 413.1,

413.2, 601.2, 603.5.1,

610.10, Table 610.10,

A 104.1, L 402.2.2

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

Gate . . . . . . . . . . . . . .606.1, 606.4, 710.3, 710.4, 710.6

Gray water diverter . . . . . . . . . . . . . . . . . . . . . .1503.2.2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.7

Isolation . . . . . . . . . . . . . . . . . .224.0, F 501.7, F 601.5.1,

F 701.3, F 801.6

Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .417.5

Pre-rinse spray . . . . . . . . . . . . . . . . . . . .420.3, L 201.0,

Table L 402.1, L 402.8

Pressure-balancing . . . . . . . . . . . . . . . . . . .218.0, 408.3

2022 CALIFORNIA PLUMBING CODE 545

INDEX

546 2022 CALIFORNIA PLUMBING CODE

Wet, Horizontal . . . . . . . . . . . . . . . . . . . . . . . . . . .908.2 Wet, Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.1 Yoke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227.0, 907.0 VENTILATING HOODS . . . . . . . . . . . . . . . .509.2.4, 509.3.4 VERTICAL-TO-HORIZONTAL

DRAINAGE FITTINGS . . . . . . . . . . . . . . . . . . . . . . .706.4 VERTICAL WET VENTING . . . . . . . . . . . . .(see Wet vents) VIOLATION, NOTICES OF . . . . . . . . . . . . . . . . . . . . . .106.2 VITRIFIED CLAY PIPE . . . . . . . . .701.2, Table 701.2, 705.8,

811.2, Table 1101.4.6

– W – WALL, EXTENSION THROUGH . . . . .312.1, 509.6.1, 509.8 WALL-HUNG FIXTURES,

INSTALLATION OF . . . . . . . . . . . . . . . . . . . . .402.4, 402.6 WASH FOUNTAINS . . . . . . . . . . . . . . . . . . . . . . . . . . . 417.1.1 WASH RACKS, AUTO . . . . . . . . . . . . . . . . . . . . . . . . . 1011.0 WASTES

Anesthetic gas disposal . . . . . . . . . . . . . . . . . . . .1301.2 Chemical . . . . . . . . . . . . . . . . . . . .205.0, 811.0, 903.2.2 Clear water . . . . . . . . . . . . . . . . . . . . . . . . .205.0, 812.0 Condensate . . . . . . . . . . . . . . . . . . . . . . . . .807.2, 814.0 Continuous . . . . . . . . . . . . . . . . . . . . . . . . .205.0, 407.5,

408.4, 409.2, 419.2 Cooling water . . . . . . . . . . . . . . . . . . . . . . . . . . . .808.0 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0 Detrimental or harmful . . . . . . . . . .305.1, 306.1, 714.1,

811.1, 1009.1, H 901.1

Flammable . . . . . . . . . . . . . . . . . . . . . . .1009.1, H 901.1

Indirect . . . . . . . . . . . . . . . . . . . . . .Chapter 8, 1303.4.1

Industrial . . . . . . . . . . . . . . . . . . . . .211.0, 306.0, 801.1,

811.1, 903.2.2

Liquid . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0, 303.0,

304.0, 710.2,

811.1, 1006.1,

1009.1, H 101.3,

H 701.1, H 901.1, L 302.0

Materials, pipe . . . . . . . . . . . . . . . . . . . . . . .701.1, 811.2

Pipe, definition . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0

Pretreatment required . . . . . . . . . . . . . . . . .811.1, 1014.1

Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1013.1

Special, definition . . . . . . . . . . . . . . . . . . . . . . . . . .221.0

Swimming pools . . . . . . . . . . . . . . . . . . . . . . . . . .813.1 WATER

Backflow prevention . . . . . . . . . . . . .Table 603.2, 603.3

Cross contamination . . . . . . . . . . . . . . . . .601.2, 602.2,

603.1 – 603.3.10

Distribution piping material . . . . . . . .604.1, Table 604.1

Distribution system design . . . . . . . . . . . . . . . . . . .601.1

Excessive pressure . . . . . . . . . . . . . . . . . . . . . . . .608.2

Hammer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609.11 Heating system requirements for

California Energy Code . . . . . . . . . . . . . . . . . . .501.2

INDEX

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.3 Lead content . . . . . . . . . . . . . . . . . . . . . .604.2, 604.2.1 Nonpotable . . . . . . . . . . . . . . . . . . . . .603.5.11, 1506.6,

1506.9.5, L 408.1 Rainwater, material . . . . . . . . . . . . . . . . . . . . . . . .1101.4 Reclaimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1602.4 Storm water . . . . . . . . . . . . . . . . .(see Storm drainage) Submeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601.2.2 Supply piping material . . . . . . . . . . . .604.1, Table 604.1 Treatment units . . . . . . . . . . . . . . . . . . . . . . . . . . . .611.0 WATER CLOSETS . . . . . . . . . . . . . . . . . . . . . . . . . . . .411.0

Approved standards . . . . . . . . . . . . . . . . . . . . . . . .411.1 Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.5 Compartments . . . . . . . . . . . . . . . .E 501.3.2, E 501.3.3 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0

Effective flush volume . . . . . . . . . . . . . . . . . . . . . .411.2 Flanged fixture Connection . . . . . . . . . . . . . . . . . .402.6 Floor-mounted, back-outlet . . . . . . . . . . . . . . . . .402.6.3 Flushometer Valve Activated . . . . . . . . . . . . . .411.2.2.1 Manufactured/Mobile home . . . . . . . . .E 501.2, E 501.3,

E 501.3.1, E 501.6 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . .411.2.3 Prohibited . . . . . . . . . . . . . . . . . . . . . . . . . .405.1, 910.7 Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .411.3 Water consumption . . . . . . . . . . . . . . . . .411.2, L 402.2 WATER-CONSERVING

FIXTURES AND FITTINGS . . . . . . . . . . . . . 401.3, L 402.0 WATER HAMMER ARRESTORS . . . . . . . . . .225.0, 609.11 WATER HEATERS . . . . . . . . . . . . . . . . . . . . . . . .Chapter 5

Access . . . . . . . . . . . . . . . . . . . . . . . .504.3.1, 507.13.2,

507.26, 508.4 Approval requirements . . . . . . . . . . . . . . . . . . . . . .501.1 Approved standards . . . . . .Table 501.1(1), 505.3, 505.4 Clearances. . . . . . . . . . . . . . . . . . . . . . 504.3 – 504.3.2,

508.1, 508.2.1 Combustion air required . . . . . . . . . . . . . . . . . . . .506.0 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.13 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0 Garages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.13 Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .503.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.0 Location . . . . . . . . . . . . . . . . . . .504.1, 507.12 – 507.15 Oil-burning and other . . . . . . . . . . . . . . . . . . . . . .505.0 Permits required . . . . . . . . . . . . . . . . . . . . . . . . . .502.0 Pressure-relief valves . . . . . . . . . . .504.4, 504.6, 505.2,

608.2 – 608.5 Protection . . . . . . . . . . . . . . . . . . .504.3 – 504.6, 505.2,

507.2, 507.8, 507.10, 507.14.1, 507.25 Relief valve discharge . . . . . . . . . . . . . . . . . . . . . .608.5 Seismic provisions . . . . . . . . . . . . . . . . . . . . . . . . .507.2 Temperature and

pressure-relief valves . . . . . . . . . . . . . . .504.6, 505.2

2022 CALIFORNIA PLUMBING CODE 547

INDEX

Temperature-limiting devices . . . . . . . . . . . . . . . . .504.5

Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.0, 510.0 WATER SOFTENERS . . . . . . . . . . . . . . . . 611.4, Table 611.4 WATER TESTS

Building sewers . . . . . . . . . . . . . . . . . . . . . . . . . . .723.0

Drainage and vent systems . . . . . . . . . . . . .105.3, 712.2

Storm drainage . . . . . . . . . . . . . . . . . .1107.2.1, 1107.2.3

Water supply systems . . . . . . . .105.2.1.1, 105.3, 609.4 WATERPROOFING

AND WATERTIGHT

Building sewer . . . . . . . . . . . . . . . . . . . . . . . . . . . .723.1

Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .707.3

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105.3

Drain pans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.5

Fixtures . . . . . . . . . . . . . . . . .402.2, 408.5, 408.7, 418.2

Flashings . . . . . . . . . . . . . . . . . . . .312.8, 906.5, 1102.3

Interceptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1016.3

Joints . . . . . . . . . . . . . . . . . . . .105.3, H 601.4, H 601.6,

H 601.7, H 601.10,

H 801.4

Openings . . . . . . . . . . . . . . . . . . .312.8, 312.10.2, 317.1

Sump or receiving tanks . . . . . . . . . . . . . . .710.2, 710.8

Tanks . . . . . . . . . . . . . . . . . . . . . . . . . .714.5, 1503.9.1,

1504.10, 1603.3, H 501.3,

H 1001.2, K 105.2

Vacuum drainage systems . . . . . . . . . . . . . . . . .C 501.8 WATER/WASTEWATER

UTILITY, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . .225.0 WEEP HOLES, SUBDRAIN

OF SHOWER STALLS . . . . . . . . . . . . . . . . . . . . . . . . .408.7 WEIGHT OF FLASHING, LEAD . . . . . .701.5, 906.6, 1102.3.1 WEIGHTS AND QUALITY

OF MATERIALS . . . . . . . . . . . . . . . . .301.2, 401.2, 604.1,

701.2, 906.6, 1102.3.1 WELDED JOINTS . . . . . . . . . . . . .212.0, 605.13.2, 705.7.2,

1208.6.10.1, 1208.6.10.3,

1322.1, F 1101.2 WELDER, PIPE, DEFINITION . . . . . . . . . . . . . . . . . . .225.0 WELL, DISTANCE FROM

SEWAGE DISPOSAL . . . . . . . . . . . . . .721.1, Table 721.1,

H 101.8, Table H 101.8 WET VENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.0

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0

Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . .908.2.3, 908.2.4

Horizontal . . . . . . . . . . . . . . . . . . .908.2, B 101.2, C 601.6

Vent connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.2

Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908.1 WHIRLPOOL BATHTUBS . . . . . . . . . . . . . . . .225.0, 409.0 WINDOW, TERMINATION

OF VENTS FROM . . . . . . . . . . . . . . . . . . . . . . . . . . .906.2 WOODEN SINKS AND TILE

WASH TRAYS OR SINKS . . . . . . . . . . . . . . . . . . . . .405.3

WORK, CONCEALED . . . . . . . . . .105.0 – 105.2.1.2, 309.2,

402.10, 503.0 – 503.2, 509.7.3.2, 1004.1, 1203.2, 1203.3, 1210.4, 1212.3.1, 1212.5.3, 1213.2.1, 1303.2, 1323.6, 1406.1 WORK, EXISTING . . . . . . . . . . . . . . . . . .102.2, 102.4, 207.0 WORKMANSHIP . . . . . . . . . . . . . . . .309.0, 609.1, 1208.6.8 WRAPPING OF PIPE . . . . . . . . . . . . . . . . . . . . . . . . .609.3,

1210.3, E 403.6 WROUGHT IRON

(GALVANIZED) . . . . . . . . . .402.6.1, Table 604.1, 604.6,

604.7, 701.2, 707.1, 1101.4, 1208.6.3.1, 1208.6.10.5, E 403.5 WYE CONNECTIONS . . . . . . . . . . . . . . . . . . . 414.3, 419.2,

706.2 – 706.4, 707.5, 707.6, 710.4, 719.4, 907.2, 909.1, 1101.16.2

– X – X-RAY DARKROOMS . . . . . . . . . . . . . . . . . . . . . . . . . .811.8

– Y – YOKE VENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .227.0, 907.0

– Z – ZINC ALLOY COMPONENTS . . . . . . . . .406.4, 1208.6.10.5

548 2022 CALIFORNIA PLUMBING CODE

HISTORY NOTE APPENDIX

CALIFORNIA CODE OF REGULATIONS, TITLE 24, PART 5

HISTORY: For prior code history, see the History Note Appendix to the California Plumbing Code, 2019 Triennial Edition, effective January 1, 2020.

1. (BSC 02/21, CEC 03/21, DSA-SS 02/21, DWR 01/21, HCD 02/21, OSHPD 02/21, SFM 02/21) Adoption by reference the 2021 Uniform Plumbing Code with neces- sary amendments to become the 2022 California Plumbing Code, and repeal of the 2018 edition of the Uniform Plumbing Code, effective on January 1, 2023.

2022 CALIFORNIA PLUMBING CODE 549

550 2022 CALIFORNIA PLUMBING CODE

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