Index — L
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
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LABELED . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0, 301.2
LAUNDRY SINKS . . . . . . . . . . . . . . . . . . . . . . . . . . . .1001.2
LAVATORIES . . . . . . . . . . . . . . . .407.0, 422.9, Table 702.1,
1503.8.2.1, 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,
A 103.2, M 102.5
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 . . . . . . . . . . . . . . . . . . . . . . .408.8.3, 701.5, 906.6
Water supply . . . . . . . . . . . . . . . . . . . . . .604.2, 604.2.1
LEADERS
Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.13
Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0
Installed outside . . . . . . . . . . . . . . . . . . . . . . . . .1101.4.3
Leaders, conductors, and connections . . . . . . . .1101.16 Roof drainage . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.12 Size of leaders, conductors, and
storm drains . . . . . . . . . . . . . . . . . . . . . . . . . . .1103.0
Sizing roof drains, leaders, and vertical rainwater piping . . . . . . . . . . . . .Table 1103.1 Traps on storm drains and leaders . . . . . . . . . . .1101.15
LIMITED-DENSITY OWNER-BUILT
RURAL DWELLING
Connections to plumbing system . . . . . . . . . . . . . .304.1
Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0
Disposal of liquid waste . . . . . . . . . . . . . . . . . . . . .303.1 Water supply and flushing . . . . . . . . . . . . . . . . . . .601.2 LIQUEFIED PETROLEUM
GAS (LP-GAS) . . . . . . . . . . . . . . . 214.0, 1202.1, 1208.4.1,
1208.5.6.3, 1208.5.10.4,
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, 1503.9.7
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
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, 507.24,
507.25, 507.26
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
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