National Water Quality Laboratory

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Our National Water Quality Laboratory (NWQL) priority is to continue the important work of the Department of the Interior and the USGS, while also maintaining the health and safety of our employees and community.  Based on guidance from the White House, the CDC, and state and local authorities, we are shifting our operations to a virtual mode and have minimal staffing within our offices. 

 

Water Science

Water Science

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

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Award Winning Capabilities

Award Winning Capabilities

In-house, Commercial Laboratories and other USGS Laboratories...

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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.

Publications

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Year Published: 2021

Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA

A pilot-scale expanded target assessment of mixtures of inorganic and organic contaminants in point-of-consumption drinking water (tapwater, TW) was conducted in Puerto Rico (PR) to continue to inform TW exposures and corresponding estimations of cumulative human-health risks across the US. In August 2018, a spatial synoptic pilot assessment of...

Bradley, Paul; Padilla, Ingrid Y.; Romanok, Kristin; Smalling, Kelly; Focazio, Michael J.; Breitmeyer, Sara; Cardon, Mary C.; Conley, Justin M.; Evans, Nicola; Givens, Carrie E; Gray, James L.; Gray, L. Earl; Hartig, Phillip C.; Hladik, Michelle; Higgins, Christopher P.; Iwanowicz, Luke R.; Lane, Rachael; Loftin, Keith; McCleskey, R. Blaine; McDonough, Carrie A.; Medlock-Kakaley, Elizabeth; Meppelink, Shannon M.; Weis, Christopher P.; Wilson, Vickie S.

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Year Published: 2021

Public and private tapwater: Comparative analysis of contaminant exposure and potential risk, Cape Cod, Massachusetts, USA

BackgroundHumans are primary drivers of environmental contamination worldwide, including in drinking-water resources. In the United States (US), federal and state agencies regulate and monitor public-supply drinking water while private-supply monitoring is rare; the current lack of directly comparable information on contaminant-mixture exposures...

Bradley, Paul; LeBlanc, Denis R.; Romanok, Kristin; Smalling, Kelly; Focazio, Michael J.; Cardon, Mary C.; Clark, Jimmy; Conley, Justin M.; Evans, Nicola; Givens, Carrie E; Gray, James L.; Gray, L. Earl; Hartig, Phillip C.; Higgins, Christopher P.; Hladik, Michelle; Iwanowicz, Luke R.; Loftin, Keith; McCleskey, R. Blaine; McDonough, Carrie A.; Medlock-Kakaley, Elizabeth; Weis, Christopher P.; Wilson, Vickie S.
https://doi.org/10.1016/j.envint.2021.106487

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Year Published: 2021

Inclusion of pesticide transformation products is key to estimating pesticide exposures and effects in small U.S. streams

Improved analytical methods can quantify hundreds of pesticide transformation products (TPs), but understanding of TP occurrence and potential toxicity in aquatic ecosystems remains limited. We quantified 108 parent pesticides and 116 TPs in more than 3 700 samples from 442 small streams in mostly urban basins across five major regions of the...

Mahler, Barbara; Nowell, Lisa H.; Sandstrom, Mark W.; Bradley, Paul; Romanok, Kristin; Konrad, Christopher; Van Metre, Peter