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<br />Drinking Water Problems <br /> <br />.... <br />~ 1. There has been a serious problem caused by raw sewage being discharged <br />en <br /> <br />to to a stream above a raw water supply Intake to a public water system plant. The <br /> <br />water treatment plant was unable to handle the pollution load and unsafe water <br /> <br />was suppl fed for several days. This resulted in several cases of gastro- <br /> <br />Intestinal Illnesses to residents and tourists. <br /> <br />2. Some point source discharges from wastewater treatment plants are dis- <br /> <br />charging into reservoirs which are raw water suppl ies for public water systems. <br /> <br />In some Instances the added pollutants result in raw water of poor quality and/or <br /> <br />distasteful and odorous potable water being supplied to the public. Standley lake <br /> <br />and Dillon Reservoir are examples of this situation. <br /> <br />. <br />3. Some unconfined aquifers have higher than normal nutrient levels as <br /> <br />indicated by past and recent studies. In local ized areaS nitrate levels exceed <br /> <br />the recommended maximum contaminant level of 10 mg/I. <br /> <br />4. ConfIned aquifers used as public water supplies in some areas of the <br /> <br />State exceed desirable levels of dissolved sol Ids for domestic suppl ies. The <br /> <br />excessive mineral ization Is generally in the form of calcium, magnesium, car- <br /> <br />bonates, and sulfates. There are also areas of high mineral ization in unconfined <br /> <br />aquifers which impairs the use for municipal water suppl ies. These problems will <br /> <br />be more clearly defined In relation to the Primary Drinking Water Regulations <br /> <br />when tests on the community ground water systems due this year are made. Test- <br /> <br />Ing has been scheduled. <br /> <br />" - 7 <br /> <br />~,;d <br />, '0', .:iai" j.i..:,,,,,:. A~", ... <br />