National Water Quality Laboratory

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The U.S. Geological Survey (USGS) gathers data for determining the location, amount, availability, and quality of ground and surface water throughout the United States and its territories. About 75 to 80 percent of the water-quality samples used in this effort are analyzed by the National Water Quality Laboratory (NWQL). 

Water Science

Water Science

Analytical Methods Research and Development, Chemical, Radiological and Biological Analysis...

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News

Date published: August 25, 2016

More than a Century of USGS Water Quality Studies in National Parks

In celebration of the National Park Service Centennial, 1916-2016

 

Date published: May 16, 2016

Media Advisory: Scientists and Officials Celebrate 40 Years of Groundbreaking Science in Lakewood

Forty years ago, water samples from around the country started flowing into the U.S. Geological Survey’s National Water Quality Laboratory in Colorado.

Date published: February 10, 2015

Man-made Pollutants Finding Their Way Into Groundwater Through Septic Systems

Pharmaceuticals, hormones and personal care products associated with everyday household activities are finding their way into groundwater through septic systems in New York and New England, according to the U.S. Geological Survey.

Publications

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Year Published: 2014

Determination of human-use pharmaceuticals in filtered water by direct aqueous injection: high-performance liquid chromatography/tandem mass spectrometry

This report describes a method for the determination of 110 human-use pharmaceuticals using a 100-microliter aliquot of a filtered water sample directly injected into a high-performance liquid chromatograph coupled to a triple-quadrupole tandem mass spectrometer using an electrospray ionization source operated in the positive ion mode. The...

Furlong, Edward T.; Noriega, Mary C.; Kanagy, Christopher J.; Kanagy, Leslie K.; Coffey, Laura J.; Burkhardt, Mark R.
Determination of human-use pharmaceuticals in filtered water by direct aqueous injection: high-performance liquid chromatography/tandem mass spectrometry; 2014; TM; 5-B10; Section B: Methods of the National Water Quality Laboratory in Book 5 Laboratory Analysis; Furlong, Edward T.; Noriega, Mary C.; Kanagy, Christopher J.; Kanagy, Leslie K.; Coffey, Laura J.; Burkhardt, Mark R.

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Year Published: 2014

Presence of the Corexit component dioctyl sodium sulfosuccinate in Gulf of Mexico waters after the 2010 Deepwater Horizon oil spill

Between April 22 and July 15, 2010, approximately 4.9 million barrels of oil were released into the Gulf of Mexico from the Deepwater Horizon oil well. Approximately 16% of the oil was chemically dispersed, at the surface and at 1500 m depth, using Corexit 9527 and Corexit 9500, which contain dioctyl sodium sulfosuccinate (DOSS) as a major...

Gray, James L.; Kanagy, Leslie K.; Furlong, Edward T.; Kanagy, Chris J.; McCoy, Jeff W.; Mason, Andrew; Lauenstein, Gunnar
Presence of the Corexit component dioctyl sodium sulfosuccinate in Gulf of Mexico waters after the 2010 Deepwater Horizon oil spill; 2014; Article; Journal; Chemosphere; Gray, James L.; Kanagy, Leslie K.; Furlong, Edward T.; Kanagy, Chris J.; McCoy, Jeff W.; Mason, Andrew; Lauenstein, Gunnar

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Year Published: 2013

Analytical properties of some commercially available nitrate reductase enzymes evaluated as replacements for cadmium in automated, semiautomated, and manual colorimetric methods for determination of nitrate plus nitrite in water

A multiyear research effort at the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) evaluated several commercially available nitrate reductase (NaR) enzymes as replacements for toxic cadmium in longstanding automated colorimetric air-segmented continuous-flow analyzer (CFA) methods for determining nitrate plus nitrite (NOx)...

Patton, Charles J.; Kryskalla, Jennifer R.
Analytical properties of some commercially available nitrate reductase enzymes evaluated as replacements for cadmium in automated, semiautomated, and manual colorimetric methods for determination of nitrate plus nitrite in water; 2013; SIR; 2013-5033; Patton, Charles J.; Kryskalla, Jennifer R.