The following water conservation measures are required for commercial buildings:
1313A.1 Showerheads. Replace all showerheads having a maximum flow rate exceeding 2.5 gallons (9.46 liters) per minute, with showerheads not exceeding the maximum flow rate established by the California Energy Commission, as set forth in the Appliance Efficiency Regulations, California Code of Regulations, Title 20, Sections 1601 to 1608, as it may be amended. Showers shall have no more than one showerhead per valve. For purposes of this subsection, the term “showerheads” includes rain heads, rain tiles, or any other fitting that transmits water for purposes of showering.
1313A.2 Faucet aerators. Replace all faucets and faucet aerators having a maximum flow rate exceeding 2.2 gallons per minute at a water pressure of 60 pounds per square inch, with plumbing fittings not exceeding the maximum flow rate established by the California Energy Commission, as set forth in the Appliance Efficiency Regulations, California Code of Regulations, Title 20, Sections 1601 to 1608, as it may be amended. Health-care facilities that are required by this chapter to install faucet aerators may satisfy that requirement by installing other flow restricting devices, such as laminar flow control devices.
1313A.3 Water closets. Replace all water closets that have a rated water consumption exceeding 1.6 gallons per flush with fixtures not exceeding the rated maximum water consumption established in the San Francisco Plumbing Code Chapter 4
, Section 402.2, as it may be amended. An owner of a commercial building may request an exemption from replacing a water closet in the building if the replacement would detract from the historical integrity of the building, as determined by the Director of the Department of Building Inspection pursuant to the California Historic Building Code and Section 1312A.2.
1313A.4 Urinals. Replace all urinals that have a flow rate exceeding one gallon per flush with fixtures not exceeding the maximum flow rate established in the San Francisco Plumbing Code, Section 402.3, as it may be amended. An owner of a commercial building may request an exemption from replacing a urinal in the building if the replacement would detract from the historical integrity of the building, as determined by the Director of the Department of Building Inspection pursuant to the California Historical Building Code and Section 1312A.2.
1313A.5 Leak repair. All water leaks shall be located and repaired. To determine the existence of leaks, the following is required.
1. Visual inspection or water meter registration. If water meter registration is used, compliance is achieved if there is no meter movement for ten minutes while all fixtures are shut off.
2. All tank type water closets shall be tested with leak detector tablets or dye to detect slow valve leaks and all flushometer type fixtures shall be visually checked for proper operation with respect to timing and leaks.