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Earlier editions: 20222019

Index

Index — P

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-10-23 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Plumbing Code (Title 24, Part 5) · Effective January 1, 2026 · Official source: Building Standards Commission

– 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 , 1101.4.2.1

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

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

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

Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609.12.3

Joints and connections . . .(see Joints and connections) Location (OSHPD) . . . . . . . . . . . . . . . . . . . . . . . .310.11 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

Separation in trenches . . . . . . . . . . . . . . . . . . .1505.11 Sprinkler system, lawn . . . . . . . . . . Table 610.3, 612.1, Table A 103.1, A 103.2, M 102.5 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,

1505.9.2, 1505.11, 1506.10.3,

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, 408.6, 408.7

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

Clearance from wall, toilet, urinal . . . . . . . . . . . . .402.5

Connections, drainage . . . . . . . . . .304.1, 406.1, 408.5,

409.2, 415.3, 416.5,

419.2, 420.4, 704.0

Control valves . . . . .408.4, 408.9, 601.2, 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 702.2,

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 . . . . . . . . . . . . .408.8, 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, 408.4, 408.8,

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, 408.8

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, 408.5

Supply fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . .402.7

Waste connections . . . . . . . .407.5, 408.5, 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

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

Exposed to sunlight . . . . . . . . . . . . . . . . . . . . . . . .906.1 Flexible tubing for whirlpool bathtubs . . . . . . . . .409.6.2 Joining and connections . . . . . . . . . . . . . . . .(see Joints and connections) Lining for shower receptors . . . . . . . . . . . . . . . . . .408.8

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1208.5.4, 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, 603.5.21,

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, Appendix C, Appendix M 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, 1202.1, 1208.7,

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

PRIVACY COMPARTMENT, DEFINITION . . . . . . . . . . . 218.0

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 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, 1208.5.3.3 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, 1603.3.2,

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 . . . . . . . . . . . . . . . .1208.5.3.3, 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

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, 1208.5.3.4, 1208.6.1.1,

1210.1.3, 1210.3, 1210.4.5, 1310.4,

1323.2, 1323.3, 1503.9.1, 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, H 501.3, K 105.2 Freezing . . . . . . . . . . . . . . . . . .312.6, 603.4.7, 1210.1.4,

1210.7.1, 1603.16

Seismic . . . . . . . . . . . . . . . . . . . . . . . . .507.2, 1323.4.5

PROTECTION OF

Animals and insects . . . . . . . . . . . . . . . . . . . . .1503.9.3

Fuel gas meters . . . . . . . . . . . . . . . .1208.6.1, 1208.6.3 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

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