56 datasets found
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Federal
Per- and polyfluoroalkyl substances (PFAS) results in tapwater samples, in select areas within the United States, beginning 2023 (ver. 2.0, June 2025)
Department of the Interior —
This data release provides concentration results for per- and polyfluoroalkyl substances (PFAS) collected by volunteer community members, in tapwater samples from 84... -
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
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
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
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
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
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
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
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
MODFLOW-NWT, MODPATH, and MT3DMS models used to study of hypothetical horizontal water-supply well design for New Hampshire and surrounding regions: U.S. Geological Survey data release
Department of the Interior —
A series of three-dimensional, hypothetical, groundwater models (MODFLOW-NWT) were developed to investigate the effects of a variety of factors on the flow of... -
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
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
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... -
Federal
Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta during treated wastewater effluent holds: August and September 2019 high resolution mapping surveys
Department of the Interior —
The study is comprised of daily survey data consisting of high resolution mapping and discrete sample collection of nutrients, phytoplankton, and related water... -
Federal
Domestic well locations and populations served in the contiguous U.S.: 2010, 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
Assessment of nutrients and water-quality constituents in the North Delta during Yolo Bypass flooding events in March 2017
Department of the Interior —
The data release contains data for the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North... -
Federal
Detections of Fecal Indicator Bacteria in Samples from the Madera/Chowchilla-Kings Domestic Aquifer Study unit, 2014
Department of the Interior —
These data describe microbiological analyses performed on groundwater samples from domestic drinking water supply collected from 42 groundwater wells in the Central... -
Federal
PFAS Reconnaissance Landscape Data
Department of the Interior —
This dataset consists of summary data for potential landscape sources of per- and poly-fluoroalkyl substances (PFAS). These summary items include facilities from the... -
Federal
Water Quality data from the Providence Water Supply Board for tributary streams to the Scituate Reservoir, water year 2015
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 2014 through September... -
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...
56 datasets found