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Chapter 6 <br />Water Supply Characterization <br />THE CITY OF <br />PLE ASANTON <br />Continued participation by Zone 7 in the planning efforts will allow Zone 7 to elect to participate in the <br />DCP implementation in the future based on information developed in the planning process, allow access <br />by Zone 7 to information related to benefits and costs, and provide Zone 7 influence throughout the <br />process. The work over the next two to four years will inform the Zone 7 Board's decision-making as the <br />DCP continues to advance. <br />As a contractor of the SWP, Zone 7 is working very closely with DWR and other water agencies, <br />environmental groups, regulatory agencies, and natural resource agencies to address the declining <br />reliability of the SWP through the DCP and other efforts. <br />1� <br />f <br />I ' <br />Legend <br />■ Potential Intakes (Only Two Sites will be Selected) <br />I � <br />Intakes and North Tunnels — <br />Pumping Plant, Southern Forebay, and South Delta Conveyance ' <br />Potential Optional Tunnel Corridors (Only One Corridor will be Selected) <br />Central Tunnel Corridor ^_ <br />%',111, Eastern Tunnel Corridor <br />ifr� � ,�� <br />If.",: <br />,Stockton <br />Banks _ <br />Pumping Jones <br />Plant pumping <br />Plant <br />Figure 6-7. Delta Conveyance Project: Potential Facilities <br />6.2.8.3 Potable Reuse <br />Potable reuse is the use of purified water derived from wastewater effluent to supplement potable water <br />supplies. While recycled water, the use of treated wastewater for non -potable uses such as irrigation, has <br />been available for many years in the Tri -Valley, potable reuse would be a new use of local wastewater <br />resources collected by DSRSD and Livermore. Its main benefits include local production and control, <br />drought resistance, and use of an existing water resource. <br />Potable reuse consists of indirect potable reuse (IPR) and direct potable reuse (DPR). IPR, which has been <br />practiced in the State since the 1930s, uses an environmental buffer (e.g., groundwater aquifer or lake) to <br />provide public health protection benefits, including contaminant dilution and time to detect and respond to <br />failures before treatment and distribution. DPR bypasses the environmental buffer and delivers purified <br />water either directly into the raw water supply immediately upstream of a treatment plant ("raw water <br />WEST YOST 6-28 City of Pleasanton <br />2020 Urban Water Management Plan <br />N-680-60-20-04-wP-a-680-2020uwMP May 2021 <br />