56 datasets found
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Federal
Assessment of nutrients and water-quality constituents at the Sacramento-San Joaquin River Confluence during a phytoplankton bloom in July 2017
Department of the Interior —
This report documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in the... -
Federal
Concentrations of per- and polyfluoroalkyl substances (PFAS) in tapwater collected throughout the United States, 2021-22
Department of the Interior —
This dataset contains the concentration and quality assurance results for 34 per- and polyfluoroalkyl substances (PFAS). 409 residential and commercial tapwater... -
Federal
Assessing spatial variability of nutrients and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2018 High resolution mapping surveys (ver. 2.0, October 2023)
Department of the Interior —
The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta, Central... -
Federal
Water Quality data from the Providence Water Supply Board for tributary streams to the Scituate Reservoir, water year 2016
Department of the Interior —
Water-quality data were collected by the Providence Water Supply Board (PWSB) from tributaries in the Scituate Reservoir drainage area, October 2015 through September... -
Federal
Quarterly sample results for per- and polyfluoroalkyl substances (PFAS) for locations in Campbell, Wisconsin, 2021-24 (ver. 2.0, March 2025)
Department of the Interior —
This data release provides the concentration results for per- and polyfluoroalkyl substances (PFAS) collected on French Island, in the town of Campbell, Wisconsin,... -
Federal
Ascii grids of predicted pH in depth zones used by domestic and public drinking water supply depths, Central Valley, California
Department of the Interior —
The ascii grids associated with this data release are predicted distributions of continuous pH at the drinking water depth zones in the groundwater of Central Valley,... -
Federal
Assessing spatial variability of nutrients, phytoplankton and related water-quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2020-2021 High-resolution mapping surveys
Department of the Interior —
The dataset documents the spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters at high spatial resolution in the... -
Federal
Domestic well locations and populations served in the contiguous U.S.: 2000, Block-group method (BGM) dataset
Department of the Interior —
The 1990 census was the last nationally consistent survey of a home’s source of water, and has not been surveyed since. The associated larger work presents a method... -
Federal
Probability distribution grids of dissolved oxygen and dissolved manganese concentrations at selected thresholds in drinking water depth zones, Central Valley, California
Department of the Interior —
The ascii grids represent regional probabilities that groundwater in a particular location will have dissolved oxygen (DO) concentrations less than selected threshold... -
Federal
Compilation of State-Level Freshwater Harmful Algal Bloom Recreational and Drinking Water Guidelines for the Conterminous United States as of 2022
Department of the Interior —
This data release contains a national compilation of state-level qualitative and quantitative guidance for a variety of environmental indicators that are used to... -
Federal
Public-supply water service areas within the conterminous United States, 2017
Department of the Interior —
This data release describes water service areas (WSA) for community water systems (CWS) within the conterminous United States, representing areas of active service... -
Federal
Daily potable water deliveries and effluent discharge by Colorado Springs Utilities: 2008–22
Department of the Interior —
This data release includes data provided by Colorado Springs Utilities to the U.S. Geological Survey. Two types of data are included here. First are daily average... -
Federal
Groundwater withdrawal zones for drinking water from the Mississippi River Valley alluvial aquifer and Mississippi embayment aquifers
Department of the Interior —
Of the approximately 6.6 million people living in the Mississippi embayment (MISE) region in the central United States, approximately 65 percent rely on groundwater... -
Federal
Concentrations and laboratory quality-assurance data for six unregulated contaminants measured in source and finished drinking-water samples collected from public water supply facilities throughout Minnesota by using ELISA and MS-based analytical methods
Department of the Interior —
The U.S. Geological Survey, in cooperation with the Minnesota Department of Health, conducted a study to determine the occurrence of six unregulated contaminants in... -
Federal
Chemical concentration results for assessment of mixed-organic/inorganic chemical exposures in the southeast United States, beginning 2022.
Department of the Interior —
This data release contains the concentration and quality-assurance results for inorganic constituents, organic compounds (volatile organic compounds [VOC], per- and... -
Federal
Target-chemical concentrations and microbiological results in surface water and tapwater, Montana, 2022
Department of the Interior —
This data release contains the concentration and quality-assurance results for inorganic constituents, as well as organic compounds (volatile organic compounds [VOC],... -
Federal
Groundwater-quality data in the Coachella Valley Domestic Supply Aquifer Study Unit, 2020: Results from the California GAMA Priority Basin Project (ver. 2.0, April 2022)
Department of the Interior —
The U.S. Geological Survey collected groundwater samples from 38 wells used for domestic and small system drinking water supply in the Coachella Valley of California... -
Federal
Domestic well locations and populations served in the contiguous U.S.: 2000, Road-enhanced method (REM) dataset
Department of the Interior —
The 1990 census was the last nationally consistent survey of a home’s source of water, and has not been surveyed since. The associated larger work presents a method... -
Federal
Assessment of water-quality in the California Sacramento-San Joaquin Delta during a North Delta directed flow action: August - October 2018 (ver. 2.0, September 2021)
Department of the Interior —
This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in... -
Federal
Data for depth of groundwater used for drinking-water supplies in the United States
Department of the Interior —
This data release includes grids representing the depth and thickness of drinking-water withdrawal zones, polygons of hydrogeologic settings, an inventory of sources...
56 datasets found