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Table of Estimated County Population Using Public Supply Groundwater or Surface Water This dataset provides the estimated number of people using publicly supplied groundwater (PSg) or publicly supplied surface water (PSs) for each county in the conterminous U.S. The county boundaries, the PSg, and the PSs represent the year 2010 Categories: Data; Tags: United States, drinking water use, geoscientificInformation, groundwater, public supply water use, All tags... surface water (non-marine), Fewer tags Estimated equivalent population using public supply surface water in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply surface water distributed across block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply groundwater in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply groundwater distributed across census block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, groundwater, public supply Estimated equivalent population using public supply water in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the total estimated population using public supply surface water and groundwater combined, distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply water in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the total estimated population using public supply surface water and groundwater combined, distributed across block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Community public supply based Hydrogeologic Mapping Units A seamless map of the major groundwater areas used by community public supply wells in the United States was needed in order to describe and compute the number of equivalent people using public supply water. This goal was met by the delineation of hydrogeologic mapping units (HMUs). An HMU is a mapped polygon, within which, all public supply wells have a common source of water. The source of water can be either a national Principal Aquifer (PA) as defined in USGS (2003) or a Secondary Hydrogeologic Region (SHR) as defined in Belitz et al. (2018). Collectively, both PAs and SHRs are referred to as Hydrogeologic Regions (HRs). The common source of water can be a single HR or multiple HRs, as HRs can overlap one another.... Categories: Data, Data Release - Under Revision; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: United States, geoscientificInformation, groundwater, hydrogeology Public Supply Groundwater Fraction per County, 2015 This dataset provides the calculated proportion of people using publicly supplied groundwater (PSGF) for each county in the conterminous U.S. The county boundaries and the PSGF represent the year 2015. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: United States, drinking water use, geoscientificInformation, groundwater, public supply water use Estimated equivalent population using public supply surface water in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply surface water distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply groundwater in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply groundwater distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, groundwater, public supply Data used to evaluate drinking water quality in the glacial aquifer system, northern USA This data release contains groundwater-quality data and well information for the glacial aquifer system in the northern USA. Water-quality data and well information were derived from a dataset compiled from three sources: The U.S. Geological Survey (USGS) National Water Information System (NWIS; USGS, 1998, 2002), the U.S. Environmental Protection Agency (USEPA) Safe Drinking Water Information System (SDWIS; USEPA, 2013), and numerous agencies and organizations at the state, regional, and local level. The data compilation of the National Water Quality Program’s groundwater assessment team is an internal dataset informally referred to as the National Groundwater Aggregation (NGA). The current study of groundwater... Tags: Aquifer system, Connecticut, Contaminants, Cycle 3, Drinking water, All tags... Glacial aquifer system, Groundwater, Hydrogeology, Hydrology, Idaho, Illinois, Indiana, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Missouri, Montana, NAWQA, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Pennsylvania, Rhode Island, South Dakota, USGS Science Data Catalog (SDC), Vermont, Washington, Water Quality, Water Resources, Water quality, Wisconsin, Fewer tags Estimated equivalent population using groundwater for public supply domestic use in the conterminous U.S. 2010, hydrogeologic mapping units, and wells used (ver. 2.0, March 2023) These datasets map the estimated population using public supply drinking water (both groundwater and surface water) using two methods: the census enhanced method (CEM) evenly distributes the population across populated census blocks, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations. (See the six Estimated equivalent population using public supply datasets). The estimated number of people using public supply was also computed by county (See Table of estimated county population using public supply dataset). In addition, a polygon dataset was created for the conterminous U.S. that identifies 177 unique Hydrogeologic Mapping Units (HMUs). (See Community... Tags: USGS Science Data Catalog (SDC) Public supply groundwater wells associated with Hydrogeologic Mapping Units Data from more than 75,000 community public supply wells were acquired from national and state agencies. Using the information provided by the agencies, along with surficial and bedrock geologic maps, the wells were assigned to a national Principal Aquifer (PA) as defined in USGS (2003) or a Secondary Hydrogeologic Region (SHR) as defined in Belitz et al. (2018). Collectively, both PAs and SHRs are referred to as Hydrogeologic Regions (HRs). The HR identifies the primary source of water for the well. The locations of the wells were generalized so that they plot in the center of a 2 kilometer square grid. The county information provided identifies the county the well is located within based on it’s actual location,... Tags: United States, drinking water use, geoscientificInformation, public supply wells, water use