Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
407.2 Water Consumption — 2025 California Plumbing Code
California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-25 · 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) § 407.2 · Effective January 1, 2026 · Official source: Building Standards Commission
The maximum water flow rate of faucets shall comply with Section 407.2.1 through Section 407.2.4 .
407.2.1 Public Lavatory Faucets . The maximum flow rate for public lavatory faucets shall not exceed 0.5 gpm at 60 psi (1.9 L/m at 414 kPa).
407.2.2 Residential Lavatory Faucets. [HCD 1] The maximum flow rate of residential lavatory faucets shall not exceed 1.2 gallons (4.54 L) per minute at 60 psi. The minimum flow rate of residential lavatory faucets shall not be less than 0.8 gallons (3.03 L) per minute at 20 psi.
407.2.3 Lavatory Faucets in Common and Public Use Areas. [HCD 1 & HCD 2] The maximum flow rate of lavatory faucets, installed in common and public use areas (outside of dwellings or sleeping units) in residen- tial buildings, shall not exceed 0.5 gallons (1.89 L) per minute at 60 psi.
407.2.4 Metering Faucets. Metered faucets shall deliver a maximum of 0.2 gallons ( 0.76 L) per metering cycle.
407.2.4.1 Metering Faucets. [BSC-CG & DSA- SS] Metering Faucets shall not deliver more than 0.20 gallons (0.76 L) per cycle in compliance with Chapter 5, Division 5.3 of the California Green Building Standards Code (CALGreen).
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