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Poisoned Waters, a two-hour special by PBS Frontline, looks at the nation's two great coastal estuaries - the Chesapeake Bay and the Puget Sound - as case studies for water quality. Examining the growing hazards to human health and the ecosystem, the production team looked at U.S. Geological Survey databases for dozens of emerging chemicals found in waterways that are making it through water filter systems into drinking water. They also evaluated the U.S. Department of Agriculture databases that pinpoint hotspots of pollution from agricultural runoff.
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