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Show utilized. In 1989, the SLCWCD affected an exchange of Utah Lake water rights with the Provo Reservoir Water User's Company and in return obtained an average annual water supply of about 29,000 acre- feet consisting of 10,000 acre- feet of stored water in Deer Creek Reservoir and 19,000 acre- feet of direct flow water rights in the Provo and Weber rivers. It is apparent further development of other sources will be required even with full development of CUP water. The district is now serving a population of over 500,000. The SLCWCD is primarily a wholesale provider of water to cities, special improvement districts, and water companies in the suburban areas south and west of Salt Lake City's service area. Over 7,400 retail connections are also serving approximately 30,000 people. Through wholesale and retail deliveries, the district expects to serve an additional 300,000 people by the year 2005. 11.2.2 Current Water Supplies When planned development of current water sources in the Jordan River Basin are in place, approximately 343,360 acre- feet of water will be available annually on a reliable basis to meet its public water needs ( See Table 9- 2). Of this total, 125,410 acre- feet is from groundwater sources, 1,060 acre- feet of artificial groundwater recharge, 61,850 acre- feet from local mountain streams, 61,700 from Deer Creek Reservoir, 84,000 acre- feet from the CUP and 9,600 acre- feet from the Welby/ Jacob Exchange. 11.2.3 Metropolitan Water District of Salt Lake City Salt Lake City has acquired an annual average water supply of approximately 167,000 acre- feet. This includes 61,700 acre- feet of storage in Deer Creek Reservoir controlled through the Metropolitan Water District of Salt Lake City. In addition, Salt Lake City obtains an average of 68,000 acre- feet each year from mountain streams, 20,000 acre- feet from the CUP, 17,600 acre- feet from springs and wells, and additional small quantities of water from miscellaneous sources. Salt Lake City's water supply can be characterized as " firm". Salt Lake City's maximum daily demand coincides with the peak summer irrigation period and is 240 percent of the average daily demand. By the year 2020, it is estimated the Salt Lake City water system must be capable of delivering a maximum daily flow of 350 million gallons per day, an increase of 69 percent over the current peak flow of 220 million gallons per day. 11.2.4 Salt Lake County Water Conservancy District The Salt Lake County Water Conservancy District obtains its water from 18 wells and two springs, from mountain streams in the southeast corner of Salt Lake Valley, the CUP through its water purchase contract with the CUWCD, the Welby- Jacob Exchange, purchases from MWD and additional small miscellaneous sources. The SLCWCD has filed well applications with the State Engineer for a total of 221.8 cfs of groundwater throughout the district. Of this amount, 46.74 cfs have been fully developed. Applications for the remaining 175.06 cfs of groundwater have been approved by the State Engineer and are being developed or held for future development. The district estimates that these applications represent a potential additional annual water supply of at least 10,000 acre- feet. The SLCWCD has a firm water supply at the present time of approximately 100,000 acre- feet. In addition to the water it directly controls, the district has an agreement with the MWD ( subject to availability) for an annual 10,000 acre- feet of treated Deer Creek Reservoir water. This agreement is valid through the year 2001, and may then terminate. Water from the MWD has been sufficient in most recent years to meet Salt Lake City needs and fulfill conditional commitments to the SLCWCD, but continued growth in Salt Lake City service areas will reduce water currently delivered to the SLCWCD. With this in mind, the SLCWCD has developed plans for other sources of water. 11.3 Organizations and Regulations Although public drinking water supplies are subject to compliance with state and federal safe drinking water standards, it is the towns, cities and counties that have primary responsibility for drinking water supplies within their boundaries. Their responsibility and authority are spelled out in Sections 10, 11, 17, 19, and 73 of the Utah Code Annotated, 1953, Amended. 11.3.1 Local As can be seen from Table 11- 1, most of the incorporated cities ( Alta, Bluffdale, Draper, Murray, Midvale, Salt Lake City, Sandy, South Jordan, South 11- 4 |