What is the California standard faucet flow rate in gallons per minute (gpm)?

• A. 1.5 gpm
• B. 2.2 gpm
• C. 4.0 gpm
• D. 3.0 gpm

Answer: (B)

Faucet flow rates are regulated to save water while keeping functionality. In California, the standard maximum flow rate for faucets is 2.2 gallons per minute at typical operating pressure. This limit is set to curb water use without making everyday tasks hard to accomplish. So 2.2 gpm is the value you should recall for California standard faucet flow. Rates like 1.5 gpm are lower than the statewide standard and are not the default requirement for general fixtures, while 3.0 gpm and 4.0 gpm exceed the limit and wouldn’t meet California codes.