Limited availability of new USGS data: starting approximately February 29, 2024, there will be a period when new USGS data will not be accessible on the Water Quality Portal. Data will still be collected but will not be publicly available. This limited availability is expected to last a few weeks.
Recent USGS data will be accessible again upon release of the new Data Profiles, which will be in the WQX 3.0 format. These profiles should be available in March, 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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Specify location parameters to describe the spatial extent of the desired dataset. All fields are optional.
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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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