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Fact Sheet 2009-3015

Southwest Principal Aquifers Regional Ground-Water Quality Assessment

By D.W. Anning, S.A. Thiros, L.M. Bexfield, T.S. McKinney, and J.M. Green

Thumbnail of and link to report PDF (5.5 MB)Abstract

The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey is conducting a regional analysis of water quality in the principal aquifers in the southwestern United States. The Southwest Principal Aquifers (SWPA) study is building a better understanding of the susceptibility and vulnerability of basin-fill aquifers in the region to ground-water contamination by synthesizing the baseline knowledge of ground-water quality conditions in 15 basins previously studied by the NAWQA Program. The improved understanding of aquifer susceptibility and vulnerability to contamination is assisting in the development of tools that water managers can use to assess and protect the quality of ground-water resources. This fact sheet provides an overview of the basin-fill aquifers in the southwestern United States and description of the completed and planned regional analyses of ground-water quality being performed by the SWPA study.

For additional information contact:
David Anning, (928) 556-7139

Southwest Principal Aquifers Water-Quality Assessment
Susan Thiros, (801) 908-5063

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Suggested citation:

Anning, D.W., Thiros, S.A., Bexfield, L.M., McKinney, T.S., and Green, J.M., 2009, Southwest principal aquifers regional ground-water quality assessment: U.S. Geological Survey Fact Sheet 2009-3015, 4 p.


Basin-Fill Aquifers

Susceptibility and Vulnerability to Contamination

Regional Analysis


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