Overview of Water Quality in Principal Aquifers

Map of 15 principal US aquifers; pie charts showing proportion of inorganic contaminants exceeding human-health benchmarks

Detailed Description

Overview of water quality in Principal Aquifers. The colored pie charts indicate the proportion of the area studied that contained a constituent in untreated groundwater at a concentration that exceeds a human-health benchmark for drinking water.


Image Dimensions: 1860 x 1524

Date Taken:

Location Taken: US