Laserfiche WebLink
<br />Water Savings from Plumbing Retrofits <br /> <br />A report on plumbing retrofit projects6 estimated annual savings of 3,900 and 1,170 <br />gallons per household in two cities that were studied. <br /> <br />Large Landscape Conservation Programs and Incentives <br /> <br />Description <br /> <br />Landscape conservation programs provide site-specific information to large irrigation <br />users on how to modify existing irrigation schedules to eliminate wasteful practices. This <br />is achieved by conducting individual landscape audits. The program's purpose is to <br />increase irrigation efficiency and reduce annual and peak demand days. <br /> <br />Water Savings from Landscape Audits <br /> <br />A search of the A WW A Waternet database found 7 papers on large area landscape audits <br />although none contained empirical data on savings from the programs. According to <br />HDR Engineering,7 it is reasonable to assume water savings of 15 percent for each large <br />landscaped area that is audited. In 1996, Thornton had 254 large accounts having an <br />annual average delivery of 4.3 acre-feet of water. The 15 percent savings amounts to <br />211,000 gallons annually per account. <br /> <br />High Efficiency Washing Machine Rebates <br /> <br />Description <br /> <br />This program saves both water and energy. The utility offers cash incentives to <br />customers to install these machines based on the marginal value of water saved. <br /> <br />Water Savings from High Efficiency Washing Machines <br /> <br />Several studies have been done to estimate savings from high efficiency washing <br />machines. The High Efficiency Laundry Metering and Marketing .A "'llysis_ ~<!)' _ _ _ " _ <br />- -- -' - - - - - - - TTIIEUv1A) reportea saVings -oT40 percent -tOr wilier-and 60 percent for energy after <br />converting to horizontal-axis washers.s Based on an average household use of 15,000 <br />gallons per year for washing machines,9 a saving of 6,000 gallons per year can be <br />realized. <br /> <br />6 Kiefer, Jack c., Issues in the Estimation of Water Savings: Case Studies from Plumbing Retrofit <br />Programs in Southern California. Proceedings of Conserve 93, American Water Works Association, Las <br />Vegas, NY 1993 <br />7 Water Conservation Plan: City of Thornton. 2000. HDR Engineering, Inc. and Aquaaaft Engineering. <br />· Hill, Suzan, WashWize, Successful Market Transformation inAction. Proceedings of A WWA Conserve <br />99, Monterey. (January, 1999). <br />, Mayer and DeOreo, Residential End Uses of Water, A WW ARF (1999). <br /> <br />13 <br />