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Federal
Safe Drinking Water Information System (SDWIS)
U.S. Environmental Protection Agency —
The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations. -
Federal
ICLUS v2.1.1 population projections
U.S. Environmental Protection Agency —
The methodology used to produce these projections differs from ICLUS v2.0 (https://cfpub.epa.gov/ncea/iclus/recordisplay.cfm?deid=322479). The demographic components... -
Federal
Drinking Water Maximum Contaminant Levels (MCLs)
U.S. Environmental Protection Agency —
National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards... -
Federal
Collection EPA Geospatial Data Download: Facility and Site Information
U.S. Environmental Protection Agency —
Contains information about facilities or sites subject to environmental regulation, including key facility information along with associated environmental interests... -
Federal
Drinking Water Treatability Database (TDB)
U.S. Environmental Protection Agency —
The Drinking Water Treatability Database (TDB) presents referenced information on the control of contaminants in drinking water. It allows drinking water utilities,... -
Federal
Beach Advisory and Closing Online Notification (BEACON) system
U.S. Environmental Protection Agency —
Beach Advisory and Closing Online Notification system (BEACON) is a colletion of state and local data reported to EPA about beach closings and advisories. BEACON is... -
Federal
EnviroAtlas - Manure application to agricultural lands from confined animal feeding operations by 12-digit HUC for the Conterminous United States, 2006
U.S. Environmental Protection Agency —
This EnviroAtlas dataset contains data on the mean livestock manure application to cultivated crop and hay/pasture lands by 12-digit Hydrologic Unit (HUC) in 2006.... -
Federal
EnviroAtlas - HU12_polygon
U.S. Environmental Protection Agency —
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of... -
Federal
EnviroAtlas - Percent Agriculture on Hydric Soil for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset contains data on Agricultural Land Coverage on Hydric Soils for each Watershed Boundary Dataset (WBD) 12-Digit Hydrologic Unit Code (HUC-12)... -
Federal
EnviroAtlas - National Inventory of Dams by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset is a summary of the National Dams Inventory data from 2009 survey. The file contains counts of inventoried dams by 12-digit hydrologic units... -
Federal
EnviroAtlas - Percent of Each 12-Digit HUC in the Contiguous U.S. with Potentially Restorable Wetlands
U.S. Environmental Protection Agency —
This EnviroAtlas dataset shows the percent of each 12-digit Hydrologic Unit (HUC) subwatershed in the contiguous U.S. with potentially restorable wetlands. Beginning...