Water Resources Division Annual Report - Fiscal Year 2017-18 WaterResourcesAR-FY17_18 | Page 13

Water Conservation Program (continued)
LAUNDRY-TO-LANDSCAPE PROGRAM
The SFPUC continued its Laundry-to-Landscape (L2L) Program, which offers residents a $125 discount
off the purchase of a graywater kit to direct water from the clothes washing machine into the garden
for irrigation. This year, 6 discounted graywater kits were provided to residential customers. Program
participants also receive training, access to a free installation tool kit and onsite technical assistance to help
design, install, and maintain their graywater systems. The SFPUC also updated its comprehensive guide to
graywater systems. Visit sfwater.org/landscape to download a copy.
COMMERCIAL EQUIPMENT RETROFIT GRANT PROGRAM
The Commercial Equipment Retrofit Grant Program continued to provide funding for businesses to
implement onsite equipment efficiency upgrades. In FY 2017-18, the program provided incentives for the
replacement of two large bulk steam sterilizers at a local medical and research facility. This project is
estimated to conserve 8 million gallons per year.
COMMERCIAL EQUIPMENT GRANT CASE STUDY
The SFPUC partnered with UCSF to increase the water efficiency of two bulk steam sterilizers.
Both sterilizers broke down regularly and were using about 12 million gallons per year. The new
sterilizers are connected to the campus chilled water system to temper steam condensate.
The condensate from the sterilizer flows to a return system, eliminating the tempering
consumption, and returning heat energy to the campus system. In addition, the new equipment
is programmed to a sleep cycle while not in use, further reducing consumption.
Project Hardware Cost:
$984,000
Rebate Amount:
$117,804
Estimated 10-Year
Water Savings:
88 million gallons
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