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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 Water Science Areas

USGS Water-Quality Information Pages

The U.S. Geological Survey provides scientific and technical expertise, leadership, and coordination in addressing issues concerning the quality of the Nation's water resources. Our scientists:

  • Collect, analyze, and interpret water-quality data.
  • Engage in field and laboratory research and methods development.
  • Work with local, State, and Federal agencies and the citizenry to identify and understand environmental issues and concerns.

For More Information

USGS Responds to Water-Quality Hazards

The USGS responds to major events, including natural hazards, that can affect our Nation's water quality by working with local, State, and Federal agencies and the citizenry to identify, quantify, and understand environmental issues and concerns.

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Water-Quality Topics

USGS collects data and information on topics such as the transport, fate, and remediation of contaminants. Learn more about:

More water quality topics...

USGS in Your Area

Learn more about local water quality by visiting the web site for the USGS Water Science Center located in your 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.

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Page Contact Information: USGS Office of Water Quality
Page Last Modified: Tuesday, 17-Jan-2017 13:21:01 EST