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Alan Plummer Associates, Inc. <br />Water Master Plan Update 2016 <br />2 <br />ng major components: <br /> One 9 MGD Surface Water Treatment Plant (SWTP) <br /> Six active wells and well pumps at five separate sites <br /> Nine storage tanks (five of which serve as elevated storage to at least one pressure <br />plane) and two clearwells at the SWTP <br /> Seven pump stations; and <br /> Six pressure reducing valves (PRVs) <br /> Over 1.3 million linear feet of mostly ductile iron or polyvinyl chloride (PVC) pipe <br />Figure 2-1 shows a map of the existing potable water system. <br />2.1 WATER SUPPLY <br />At present, the City obtains approximately 90 percent of its water supply through an agreement <br />with the Guadalupe-Blanco River Authority. Raw surface water released from Canyon Lake is <br />delivered to the SWTP via a 48-inch transmission line from the intake in Lake Dunlap. <br />Groundwater extracted at each of the five well sites provides additional supply as needed. A <br />look at future water supply needs is provided in Chapter 5. <br /> <br /> <br /> <br />2-1 <br />m:\projects\0600\022-01\doc\report\draft\draftmasterplan-v15_hef.docx <br /> <br />