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Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

March 29, 2021

Groundwater-quality environmental data were collected from 983 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water Quality Program and are included in this report. The data were collected from six types of well networks: principal aquifer study networks, which are used to assess the quality of groundwater used for public water supply; land-use study networks, which are used to assess land-use effects on shallow groundwater quality; major aquifer study networks, which are used to assess the quality of groundwater used for domestic supply; enhanced trends networks, which are used to evaluate the time scales during which groundwater quality changes; vertical flow-path study networks, which are used to evaluate changes in groundwater quality from shallow to deeper depths; and modeling support studies, which are used to provide data to support groundwater modeling. Groundwater samples were analyzed for many water-quality indicators and constituents, including major ions, nutrients, trace elements, volatile organic compounds, pesticides, radionuclides, microbiological indicators, and some constituents of special interest (arsenic speciation, hexavalent chromium [chromium (VI)], and perchlorate). These groundwater-quality data, along with data from quality-control samples, are tabulated in this report and in an associated data release. Data for microbiological indicators for samples collected in 2016 are included in the companion data release.

Citation Information

Publication Year 2021
Title Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019
DOI 10.3133/ds1136
Authors James A. Kingsbury, Laura M. Bexfield, Terri Arnold, MaryLynn Musgrove, Melinda L. Erickson, James R. Degnan, Anthony J. Tesoriero, Bruce D. Lindsey, Kenneth Belitz
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Data Series
Series Number 1136
Index ID ds1136
Record Source USGS Publications Warehouse
USGS Organization Illinois Water Science Center; Minnesota Water Science Center; Oregon Water Science Center; Texas Water Science Center; Lower Mississippi-Gulf Water Science Center; National Water Quality Program

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