In Los Angeles, scientists have found that 60 million gallons of ground water in the local watershed contain the environmentally harmful metal, chromium 6. The contamination is moving in the direction of the city"s main drinking water supply and could pose a major health problem within 10 years.
More than 50 percent of Pennsylvania"s streams are polluted as a result of decades of coal mining operations. Drinking water in 39 of the state"s 69 counties is affected.
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