Issues: Water

California's Contaminated Groundwater
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Drinking Water Sources That Exceed Maximum Contaminant Levels

This map displays the location of drinking water sources (groundwater wells only) with at least one contaminant that exceeded a state drinking water standard, as reported to the Department of Health Services, between October 1999 and October 2000.

Drinking Water Sources That Exceed Maximum Contaminant Levels

Source: Data from the Department of Health Services (DHS) Drinking Water Database (October 1999–October 2000); compiled by LFR Levine-Fricke; mapped by NRDC.


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