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Chapter 6 <br />Water Supply Characterization <br />THE CITY OF <br />PL£ASANTON <br />to September 2019 near Zone 7's municipal wells were within the range Zone 7 considers to be "elastic <br />deformation" (i.e., rebound to their original location when groundwater levels return to previous levels). <br />6.2.2.3 Historical and Projected Groundwater Use <br />As described above, the City has a GPQ of 3,500 AFY in the Main Basin. Historical groundwater pumpage <br />from 2016 through 2020 is shown in Table 6-2. The City expects to pump 3,500 AFY on average in the future. <br />Table 6-2. Groundwater Volume Pumped (DWR Table 6-1 Retail) <br />El <br />❑ <br />.. <br />... <br />. <br />Groundwater Type <br />Drop Down List <br />Location or Basin Name <br />2016* 2017* <br />2018* <br />2019* <br />2020* <br />May use each category <br />multiple times <br />Livermore Valley <br />Alluvial Basin <br />3,426 4,541 <br />3,499 <br />3,549 <br />3,027 <br />Groundwater Basin <br />TOTAL <br />3,426 4,541 <br />3,499 <br />3,549 <br />3,027 <br />* Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2-3. <br />NOTES: Volumes are in AF. <br />6.2.3 Surface Water <br />As described in Section 6.2.1, the City receives treated surface water from Zone 7, whose supplies include <br />imported surface water from the SWP and local surface water captured in the Del Valle Reservoir. <br />6.2.4 Stormwater <br />Stormwater can be beneficially reused as a water supply source to meet local water supply demands. <br />Beneficial reuses include blending with other water supplies for groundwater recharge, redirecting it into <br />constructed wetlands or landscaping, and diverting it to a treatment facility for subsequent reuse. <br />Currently, the City does not implement any stormwater recovery systems. <br />6.2.5 Wastewater and Recycled Water <br />DSRSD is responsible for treating and discharging treated wastewater for the Cities of Dublin, South San <br />Ramon, and the City. In addition, DSRSD owns and operates a water recycling plant at the RWTF and <br />participates with EBMUD in a joint powers authority (DSRSD-EBMUD Recycled Water Authority, or <br />DERWA) that operates the San Ramon Valley Recycled Water Program (SRVRWP). The SRVRWP provides <br />recycled water that meets Title 22 disinfected tertiary recycled water requirements to landscape irrigation <br />customers of DSRSD and EBMUD (including the City of San Ramon, City of Dublin, Dougherty Valley, Town <br />of Danville, and Town of Blackhawk areas of Alameda and Contra Costa counties). The City began using <br />recycled water from DERWA facilities in 2014 and will continue to expand use in the future. <br />WEST YOST 6-15 City of Pleasanton <br />2020 Urban Water Management Plan <br />May 2021 <br />