The U.S. Geological Survey National Water Quality Network—Groundwater, 2024
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Abstract
The U.S. Geological Survey (USGS) operates a National Water Quality Network (NWQN) to monitor trends in groundwater quality and assess emerging contaminants of concern. It is a “network of networks” with 81 subnetworks being sampled on a decadal time scale. Each year, 8 of the subnetworks are sampled. Subnetworks have 20–30 wells each and include studies of domestic supply wells or shallow groundwater (20–50 feet deep) underlying urban land use or agricultural land use. Currently there are 2,089 wells in the network. All wells are sampled for physical properties, nutrients, major ions, trace elements, per- and polyfluoroalkyl substances (PFAS), and a subset of wells are sampled for pesticides, volatile organic compounds, radionuclides, and microbiological contaminants.
Suggested Citation
Lindsey, B.D., Kingsbury, J.A., and Santangelo, L.M., 2025, The U.S. Geological Survey National Water Quality Network—Groundwater, 2024: U.S. Geological Survey General Information Product 256, https://doi.org/10.3133/gip256.
ISSN: 2332-354X (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | The U.S. Geological Survey National Water Quality Network—Groundwater, 2024 |
| Series title | General Information Product |
| Series number | 256 |
| DOI | 10.3133/gip256 |
| Publication Date | August 04, 2025 |
| Year Published | 2025 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | WMA - Earth System Processes Division |
| Description | 1 p. |
| Country | United States |
| Other Geospatial | Contiguous United States |
| Online Only (Y/N) | Y |