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<br />otin9~9 <br /> <br />Metropolitan's service area by about 74,000 AF. Losses <br />due to contamination by organic chemicals. have been <br />minimal to date, only about 6,500 AF, because <br />groundwater producers have relocated wells and blended <br />lower quality water with higher quality water to meet <br />water quality standards. However, 17 percent of wells <br />tested for the presence of organic chemical contaminants <br />'exceeded state action levels and 50 percent had at least <br />some contamination. Followup studies are now underway <br />to update information on the extent of contamination and <br />possible losses of groundwater yield. <br />C. Conclusion. <br />The current water supply problems confronting <br />Southern California result from two powerful factors: <br />the drought, attributable to Mother Nature and beyond <br />our control, and the growing imbalance between demands <br />and reliable supplies, attributable to a failure of <br />policy as the storied politics of California water has <br />stymied water managers in efforts to properly plan and <br />prepare for the inevitable droughts that will inevitably <br />visit desert economies. <br />1. Potential Shorta~es. During 1990, <br />potential shortages could reach 200;000 AF in <br />Metropolitan's service area under worst case <br />assumptions. If 1990-91 should become year 5 of the <br />drought, the potential shortfall could be 500,000 AF. <br />2. Reliability. More fundamentally, the <br />water supply system does not have an adequate degree of <br /> <br />" <br /> <br />-9- <br />