Water Resources Division Annual Report - Fiscal Year 2017-18 WaterResourcesAR-FY17_18 | Page 11

FY 2017-18 San Francisco Retail Water Conservation Program Performance & Savings FY 2017-18 activities implemented through the SFPUC water conservation program are estimated to have a potential lifetime water savings of 516 million gallons 1 . 516 44% Non-Residential 29% Single-Family 27% Multi-Family MILLION GALLONS Water Conservation Program Activity Summary FY 2009-10 through FY 2016-17 FY 2017-18 141,348 Aerators 52,767 Showerheads 37,507 Other* 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000 110,000 120,000 130,000 140,000 150,000 * Other devices include toilet leak repair flappers and fill valves, garden spray hose nozzles and restaurant pre-rinse spray hose nozzles. 46,484 Toilets Urinals 1,735 Clothes Washers 0 27,345 10,000 20,000 30,000 Water-Wise Evaluations 0 1 40,000 50,000 38,490 10,000 20,000 30,000 40,000 50,000 Water conservation savings are estimated using the SFPUC Water Conservation Tracking Model. Savings are estimated lifetime cumulative water savings up to 30 years. 516 million gallons roughly equals 1,584 acre-feet of water. An acre-foot is the standard metric used by many water agencies to report lifetime water savings. One acre-foot is roughly equivalent to a football field filled with one foot of water. 9