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The Environmental Working Group is raising concern about levels of hexavalent chromium in drinking water systems. The City of San Luis Obispo says its drinking water meets all of the necessary health standards.
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The Environmental Working Group is raising concern about levels of hexavalent chromium in drinking water systems. The City of San Luis Obispo says its drinking water meets all of the necessary health standards.
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California's drought is not only affecting the quantity of drinking water available, but also the quality.The U.S. Geological Survey says groundwater…