Search datasets
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ECHO provides integrated compliance and enforcement information for about 800,000 regulated facilities nationwide. Its features range from simple to advanced, catering to users who want to conduct...
Search relevance: 1.00 | Views last month: 133 | Catalog Last Checked: September 15, 2026 at 07:33 PM -
Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level. A national layer, including all available SSA...
Search relevance: 1.00 | Views last month: 96 | Catalog Last Checked: August 03, 2026 at 05:00 AM -
This dataset shows the temporal frequency and spatial extent of cyanobacteria cells in large, freshwater lakes and reservoirs across the continental United States derived from 300x300 meter MEdium...
Search relevance: 1.00 | Views last month: 89 | Catalog Last Checked: August 03, 2026 at 04:16 AM -
This GIS dataset contains data on wastewater treatment plants, based on EPA's Facility Registry Service (FRS) and NPDES, along with Clean Watersheds Needs Survey (CWNS) and other data sources.
Search relevance: 1.00 | Views last month: 67 | Catalog Last Checked: August 03, 2026 at 04:43 AM -
The is a curated dataset of information for all public water systems (PWS) in California, including the name, location and some general informaiton for each PWS. The source of the data...
Search relevance: 1.00 | Views last month: 41 | Catalog Last Checked: September 10, 2026 at 06:10 PM -
SDWIS/FED is EPA's national regulatory compliance database for the drinking water program. It includes information on the nation's 160,000 public water systems and violations of drinking water...
Search relevance: 1.00 | Views last month: 35 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations.
Search relevance: 1.00 | Views last month: 33 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
A database where EPA has compiled data on public drinking water systems and whether they have certain drinking water violations. This data is collected by the states and given to the EPA. This...
Search relevance: 1.00 | Views last month: 31 | Catalog Last Checked: September 10, 2026 at 06:54 PM -
This dataset contains the results of EPAs estimates for domestic water supply in The United States for 2020 census blocks. The file is a comma-delimited text file, which contains records for 2020...
Search relevance: 1.00 | Views last month: 30 | Catalog Last Checked: September 10, 2026 at 07:01 PM -
This GIS dataset contains data on wastewater treatment plants, based on EPA's Facility Registry Service (FRS) and NPDES, along with Clean Watersheds Needs Survey (CWNS) and other data sources.
Search relevance: 1.00 | Views last month: 27 | Catalog Last Checked: September 14, 2026 at 07:35 PM -
This downloadable data package consists of location and facility identification information from EPA's Facility Registry Service (FRS) for all sites that are available in the FRS individual...
Search relevance: 1.00 | Views last month: 26 | Catalog Last Checked: September 14, 2026 at 07:34 PM -
This data provides location and attribute information on Facilities regulated under the Superfund Enterprise Management System (SEMS). The Superfund Enterprise Management System (SEMS) integrates...
Search relevance: 1.00 | Views last month: 24 | Catalog Last Checked: September 14, 2026 at 07:35 PM -
National watershed boundary (HUC12) dataset for the conterminous United States, retrieved 10/26/2020
This child item provides a snapshot of the watershed boundary dataset which consists of a shapefile with 87,020 12-digit hydrologic unit codes (HUC12) for the conterminous United States retrieved...
Search relevance: 1.00 | Views last month: 24 | Catalog Last Checked: September 10, 2026 at 09:09 PM -
National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect public health by limiting...
Search relevance: 1.00 | Views last month: 24 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This EnviroAtlas dataset describes the percentage of a 15-m...
Search relevance: 1.00 | Views last month: 20 | Catalog Last Checked: May 06, 2026 at 12:20 AM -
This web feature service contains location and facility identification information from EPA's Facility Registry Service (FRS) for the subset of active hazardous waste facilities that link to the...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: September 14, 2026 at 07:35 PM -
There are limited open source data available for determining water production/treatment and required energy for cities across the United States. This database represents the culmination of a...
Search relevance: 1.00 | Views last month: 14 | Catalog Last Checked: September 10, 2026 at 05:47 PM -
CCL 3 is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, that are known or anticipated to occur in public water...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
Amount of water produced by month and by source and the water delivered by type of use and by month for every Public Water System (PWS) reporting. Public Water Systems submit their annual...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: September 10, 2026 at 06:16 PM -
This web feature service contains location and facility identification information from EPA's Facility Registry Service (FRS) for the subset of facilities that link to the Risk Management Plan...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: September 14, 2026 at 07:35 PM
