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Federal
Drinking Water Maximum Contaminant Levels (MCLs) recent views
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
SDWISFED Drinking Water Data recent views
U.S. Environmental Protection Agency —
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... -
Federal
Safe Drinking Water Information System (SDWIS) Federal Reports Advanced Search Tool recent views
U.S. Environmental Protection Agency —
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... -
Federal
Contaminant Candidate List 2 recent views
U.S. Environmental Protection Agency —
CCL 2 is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, that are known or... -
State
Surface Water Drinking Water Source Areas recent views
State of Oregon —
This data layer is an element of the Oregon GIS Framework. This map includes Oregon Department of Environmental Quality (DEQ) and Oregon Department of Human Services’... -
Federal
Satellite monitoring of cyanobacterial harmful algal bloom frequency in recreational waters and drinking water sources recent views
U.S. Environmental Protection Agency —
This dataset shows the concentration of cyanobacteria cells/ml in fresh water bodies and estuaries of the Ohio and Florida derived from 300x300 meter MEdium... -
Federal
Six-Year Review Contaminant Occurrence Data recent views
U.S. Environmental Protection Agency —
The Safe Drinking Water Act (SDWA) requires EPA to review each National Primary Drinking Water Regulation (NPDWR) at least once every six years and revise them, if... -
Federal
Unregulated Contaminant Monitoring Rule 3 (UCMR 3), (2013-2015) Occurrence Data recent views
U.S. Environmental Protection Agency —
The third Unregulated Contaminant Monitoring Rule (UCMR 3), conducted under EPA oversight, was published in the Federal Register on May 2, 2012. UCMR 3 requires... -
Federal
Contaminant Candidate List 3 recent views
U.S. Environmental Protection Agency —
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... -
Federal
Contaminant Candidate List 1 recent views
U.S. Environmental Protection Agency —
CCL 1 is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, that are known or... -
Federal
Arsenic Safe Drinking Water Information System (SDWIS) Federal Reports Advanced Search Tool recent views
U.S. Environmental Protection Agency —
This data includes information on Arsenic violations in the US, including time patterns and spatial patterns in Arsenic violations, and people served by systems in...