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USGS Water-Quality Information

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 [Photo: USGS scientist collects water-quality samples.]

USGS scientists deploy SPMD and POCIS samplers to collect waterborne contaminants in Manoa Stream on Oahu, Hawaii.


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Water Quality Data

Today's Water Conditions

Get continuous real-time water-quality measurements from Water-Quality Watch maps.
[Sample Water-Quality Watch Map]

Water Quality Portal (WQP)

Get current and historical USGS and EPA water-quality data at the WQP.


Get stream ecosystem aquatic bioassessment data from BioData.

For More Data

View a complete list of USGS water-quality data resources.

USGS in Your Area

USGS Water Science Centers are located in each state.

 [Map: There is a USGS Water Science Center office in each State.] Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

USGS Laboratories

USGS scientist conducting laboratory work.

Branch of Quality Systems

The USGS Branch of Quality Systems monitors, assures, and improves the quality of USGS analytical water-quality data through proficiency testing and by documenting variability and bias of analytical results of USGS laboratories.

Mercury Research Laboratory

The USGS Mercury Research Laboratory (MRL) provides assistance and support for USGS regional and national projects in the collection and analysis of low-level mercury samples using ultra trace level clean collection and analytical methods.

National Water Quality Laboratory (NWQL)

The USGS National Water Quality Laboratory (NWQL) conducts laboratory analyses for USGS water-resources investigations. NWQL determines organic and inorganic constituents in samples of groundwater and surface water, river and lake sediment, aquatic plant and animal material, and in precipitation samples.[an error occurred while processing this directive] USGS can also refer to the NWQL Intranet.

Ohio Water Microbiology Laboratory

The USGS Ohio Water Microbiology Laboratory (OWML) works with government agencies, academic institutions, and other partners to study the quality of national, state, and local water resources. The OWML is involved in investigations of processes that affect microorganisms in the environment and testing of new methods to improve detection and interpretation of microbiological presence in water.

Organic Geochemistry Research Laboratory

The USGS Organic Geochemistry Research Laboratory (OGRL) focuses on the fate, transport, and degradation of organic contaminants in the environment and on the effect of emerging contaminants on water. OGRL combines these issues with analytical methods to determine and link to geochemical and hydrologic processes.

Reston Biogeochemical Processes in Groundwater Laboratory (RBPGL)

The USGS Reston Biogeochemical Processes in Groundwater Laboratory (RBPGL) offers numerous analytical services for analyzing organic constituents in subsurface environmental samples. The following services are available:

  • Non-volatile Dissolved Organic Carbon (NVDOC) in aqueous samples
  • Low Molecular Weight Organic Acids (LMWOA)
  • Lactate, acetate, propionate, formate, butyrate, pyruvate, and benzoate in aqueous samples

Reston Chlorofluorocarbon Laboratory

The USGS Reston Chlorofluorocarbon Laboratory provides the USGS with analytical services for chlorofluorocarbons (CFCs), sulfur hexafluoride, and dissolved gases and administers the USGS contract for tritium/helium-3 dating. The data generated are used in hydrologic studies to trace the flow of young water and to determine the time elapsed since recharge.

Reston Molecular and Environmental Microbiology Laboratory (RMEML)

The USGS Reston Molecular & Environmental Microbiology Laboratory (RMEML) offers numerous analytical services for analyzing microorganisms in environmental samples. The following services are available:

Reston Radiochemistry Laboratory


Reston Stable Isotope Laboratory

The USGS Reston Stable Isotope Laboratory conducts research on the use of isotope ratio measurements in studies of water resources and environmental quality. The Laboratory contributes to the improvement of measurement science and the development of isotope databases and provides isotope analyses on a routine basis to a large user community within the USGS and elsewhere.

Soil and Low-Ionic-Strength Water Quality Laboratory

The USGS New York Water Science Center's Soil and Low Ionic Strength Water Quality Laboratory provides accurate measurements of soil water, non-agricultural soils, stream water, and lake water, that can be adapted to the specific needs of each USGS study. Services include sample processing and customized data reports.

Sediment Laboratories

The USGS maintains sediment laboratories at the Water Science Centers and offices listed below. The services provided vary according to the needs and expertise of the specific laboratory and are available for internal USGS use or by contract through the respective Science Center to other government agencies by virtue of cooperative agreements for work being performed with the USGS.

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Page Last Modified: Wednesday, 28-Dec-2016 18:44:10 EST