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Section 3. Water Supplies The City of Pleasanton purchases approximately 80 percent of its water from Zone 7. The remaining 20 percent is produced from three groundwater wells that are owned and operated by the City. The groundwater basin is managed by the local agencies and has limitations on annual pumping. Zone 7's water supply reliability has decreased in recent years with the biological opinions on how the state and federal water projects can operate their pumps in the San Joaquin Delta—the major source of water for Zone 7. The change in operations has lowered the state's ability to meet its contractual demands and,thus,limited Zone 7's ability to serve increased water demands. Both Zone 7 and the City assume little to no growth in potable water demands from the City of Pleasanton over the next 20 years. 3.A. Water Supplies Available to the EPSP - Recycled Water The City has implemented Best Management Practices to help find water supplies for its various development areas. The WSA (2012) for the City's Housing Element will help fund the State's required plumbing fixtures retrofit program. The City recently completed a recycled water feasibility study. The study identified areas within the City that are viable for use of recycled water. Consistent with the City's 2010 UWMP, more than 4,000 ac-ft of irrigation demand was identified by the recycled water feasibility study. Of this,nearly 2,400 ac-ft per year of irrigation was identified as potential areas for recycled water. See the Figure 6.7 from the feasibility study done by the City of Pleasanton. The feasibility study figure shows the areas identified as potential customers for recycled water. As the recycled water system is expanded,there is an equivalent demand reduction on the potable water system. This reduction in potable water demand is a source of supply for the 4 I EPSP DRAFT WSA July 2013