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New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here.

This legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

Welcome to the new Water Quality Portal

The Water Quality Portal (WQP) is the premiere source of discrete water-quality data in the United States and beyond. This cooperative service integrates publicly available water-quality data from the United States Geological Survey (USGS), the Environmental Protection Agency (EPA), and over 400 state, federal, tribal, and local agencies. Learn More


To download data complete the query below. Returning and experienced users may wish to use the Advanced Download.

Download Water Quality Data

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Specify location parameters to describe the spatial extent of the desired dataset. Additional options are available in the Advanced Download. All fields are optional.

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Specify data source, date range, and sampling filters to apply to the desired dataset. Additional options are available in the Advanced Download. All fields are optional.

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Specify a data type and file format to download. Additional options are available in the Advanced Download.

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Download

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Specify location parameters to describe the spatial extent of the desired dataset. All fields are optional.
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Beta

Upstream/Downstream information can be used to help you determine where to collect water quality data based on the flow of water. Select a feature source, and optionally search for a location. Then, click a feature to select upstream/downstream navigation and enter a desired distance. These search criteria will be populated in your query.

Specify data source, date range, and sampling filters to apply to the desired dataset. All fields are optional.
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Download

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