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Low Flow Toilets

Our partners at the San Francisco Public Utilities Commission offer businesses rebates for low flow toilets.  Please visit their page here

All San Francisco Green Businesses must use toilets with 1.6 gallons or less flush volume. ULFTs and HETs are approved for use.

ULFT's: In 1994 new water conserving toilets, called ultra-low-flush toilets (ULFT's) were required in all new construction. ULFT's use 1.6 gallons per flush and are much more water efficient than older toilets, which use up to 7 gallons per flush. Each installed ULFT can save a typical family 70 gallons a day in water use.

A number of commercial ULFTs are available in a range of rough-in sizes and shapes. Both wall-mount and floor-mount 1.6 gallon per flush toilets are readily available. The efficiency of a Flushometer and bowl combination toilet depends mainly upon the right combination and regular maintenance of the flushometer valve.

HET's: High-Efficiency toilets (HET) are fairly new to the American market but have long been used overseas. The HET flushes at least 20% below the standard model. Many HET's are dual-flush toilets, which have two separate flush volume options, a half flush (.8 gallons) and a full flush (1.6 gallons).

SFPUC currently offers a $125 rebate for replacing your pre-1994 water-guzzling toilet with an approved tank-style HET.

There are several industrial flushometer HET's on the market, and over a dozen have passed performance standards set by the CUWCC (California Urban Water Conservation Council). SFPUC offers financial incentives of up to $200 per fixture for installing qualifying flushometer valve/bowl combinations.

How to document: Take a picture of all toilets and each flow rate (this usually can be found on the base near the hinges of the seat – see picture below):