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2015 URBAN WATER MANAGEMENT PLAN <br />1.3.2 City of Santa Ana Water Facilities <br />The City maintains 444 miles of transmission and distribution mains, nine reservoirs with a storage <br />capacity of 49.3 million gallons, seven pumping stations, 20 wells, and seven import water connections. <br />Thirteen of the City wells pump into surface reservoirs with booster stations pumping the water into the <br />distribution system. The remaining wells pump directly into the City's distribution system. Water pumped <br />from these wells has been naturally filtered as it passes through underlying aquifers of sand, gravel, and <br />soil. This well water only requires disinfectant treatment for system distribution. <br />The City maintains seven imported water connections to receive water through Metropolitan's Orange <br />County and East Orange County Feeder pipelines. Seven metered connections with a total capacity of <br />60,580 gallons per minute (gpm) transfer water into the City's distribution system. <br />System Pressures — Reducing distribution system pressures will, to a certain degree, conserve water <br />and pumping energy by reducing leaking in water and plumbing systems, as well as reducing waste or <br />water when turning water fixtures on and off. The City continually reviews the pressure zones to <br />determine the feasibility of reducing system pressures by lowering settings on distribution system <br />pressure regulators. The reviews have indicated that potential fire protection requirement deficiencies <br />occur when pressures are reduced. Therefore, the City maintains safe yet efficient system pressures. <br />Peak Demand — Water system demand patterns are a result of climatological, land use, sociological, and <br />institutional factors, all of which affect the amount of water consumed. Reduction in peak demands can <br />reduce the need for construction of new water storage and conveyance facilities and, in certain instances, <br />the development of new water sources. The City's computerized telemetry system allows water system <br />operators to operate the system more efficiently through the ability to stage and prioritize water <br />production facilities usage to meet these ever changing demand patterns. <br />The system connections and total water volume supplied including non - potable are summarized in Table <br />1 -3, and the wholesalers informed of this water use as required are displayed in Table 1 -4. <br />Table 1 -3: Public Water Systems <br />arcadis.com 96921 b 1 -7 <br />