|ORANGE||Counties with groundwater contamination from pesticides.|
|PINK||Counties with nitrate levels exceeding EPA recommended drinking water standard of 44 mg/L in more than 20 percent of samples. 1) More than 60 percent.|
|RED||Counties with arsenic concentrations exceeding the recommended EPA drinking water standard of 0.05 mg/L in more than 20 percent of samples. 1) more than 50 percent.|
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