National Water-Quality Assessment (NAWQA) Program

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Groundwater Quality in Principal Aquifers

 

Congressional Briefing March 6, 2015

Presentation



National Summary of Groundwater Quality

Press Release

FAQs

Stakeholder Quotes

National Maps of Groundwater Quality

Groundwater Quality Sampling Locations

Manganese

Arsenic

Radon

Uranium

Radium

Nitrate

Pesticides and VOCs

Principal Aquifer Reports

(hover over a region on the map to access the report for that Principal Aquifer)

Estuary Map


Groundwater—The Invisible and Vital Resource

tower

76 Billion Gallons
of groundwater are pumped each day

65 Percent is used for irrigation
21 Percent is used for public-supply

115 Million People
rely on groundwater for drinking water

43 Million People
rely on groundwater from private wells

1 of Every 5 groundwater samples from parts of aquifers used for drinking water contained a contaminant from a geologic or manmade source at a level of potential concern for human health

6,600 Wells
were sampled for this study

1.3 Million Chemical Analyses
were done for this study

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Page Last Modified: Monday, 30-Mar-2015 08:06:30 EDT