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Show Untreated Water Not Always Safe ft Water in clear, sparkling streams is not always safe to drink. This advice by the U.S. Forest Service is directed especially to backcountry travelers, tra-velers, but should be observed by everyone at all times. Forest Service officials point out that even in remote country, such as the High Uintas Primitive Area, in Utah, and the Idaho Primitive Area, in central Idaho, problems prob-lems can be encountered when untreated water is consumed. Recent scientific studies show that in virtually every-part every-part of the world the intestinal flagellate Giardia lamblia can be a couse of serious illness. The usual time between infection and the onset of acute symptoms of Grardiasis has been 15 days. Severe diarrhea and cramps may last from a few days to two or three months. The best approach to the control of Giardiasis is through prevention. The organisms can survive in cold water from one to three months, but are killed by raising water temperature to .2 degrees F (50 ( C). They resist 0.5 Der,. Ui chlomated water for PlCeW three days but are UsJ W destroyed by iodine co their pounds.n recommended dose Judg' es;f ' ' foii If susect water must , ofi used, ,t should be boiled 0 treated vith an iodine com pound sith as tetraglveir! hydroperiolide (Globa ine) |