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Fact Sheet 2010–3121

Water-Quality Sampling by the U.S. Geological Survey: Standard Protocols and Procedures

By Franceska D. Wilde


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The U.S. Geological Survey (USGS) develops the sampling procedures and collects the data necessary for the accurate assessment and wise management of our Nation’s surface-water and groundwater resources. Federal and State agencies, water-resource regulators and managers, and many organizations and interested parties in the public and private sectors depend on the reliability, timeliness, and integrity of the data we collect and the scientific soundness and impartiality of our data assessments and analysis. The standard data-collection methods uniformly used by USGS water-quality personnel are peer reviewed, kept up-to-date, and published in the National Field Manual for the Collection of Water-Quality Data (, an online publication that is described in this Fact Sheet.

First posted January 20, 2011

For additional information contact:
Chief, Office of Water Quality
U.S. Geological Survey, MS 412
12201 Sunrise Valley Drive
Reston, VA 20192

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Suggested citation:

Wilde, F.D., 2011, Water-quality sampling by the U.S. Geological Survey—Standard protocols and procedures: U.S. Geological Survey Fact Sheet 2010-3121, 2 p. Available at

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