National Water-Quality Assessment Program

U.S. Geological Survey
Fact Sheet 2008-3076
version 1.0

Dissolved Solids in Basin-Fill Aquifers and Streams in the Southwestern United States—Executive Summary

By David W. Anning


photo of worker in a tram that is dangling from a cable while a measurement tool the size of a large fish is lowered into the river some 30 feet below
A U.S. Geological Survey scientist collects a sample from the Colorado River for analysis of dissolved solids and other water-quality constituents (USGS photograph by Nancy Bauch).

The U.S. Geological Survey (USGS) recently completed a regional study in the Southwestern United States to characterize dissolved-solids conditions in major water supplies, including important rivers and aquifers. High concentrations of dissolved solids can degrade a water supply’s suitability for important uses, such as drinking water or crop irrigation. In an effort to ensure the continued availability of clean surface and groundwater, USGS scientists identified areas where there have been both increasing and decreasing trends in dissolved-solids concentrations.

Download this report as a 4-page PDF file (fs2008-3076.pdf; 5.2 MB).

For questions about the content of this report, contact David Anning

Suggested citation and version history

Download a free copy of the latest version of Adobe Reader.

| Help | PDF help | Publications main page |
| Western Fact Sheets | Arizona Water Science Center |
| Water Resources | National Water-Quality Assessment (NAWQA) Program |

This report is also available in print from:

USGS Information Services, Box 25286,
Federal Center, Denver, CO 80225
telephone: 888 ASK-USGS; e-mail:

Accessibility FOIA Privacy Policies and Notices

Take Pride in America home page. logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Michael Diggles
Page Created: September 9, 2008
Page Last Modified: September 9, 2008