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National List of Beaches
EPA has published a list of coastal recreation waters adjacent to beaches (or similar points of access) used by the public in the U.S. The list, required by the Beaches... -
Safe Drinking Water Information System (SDWIS)
The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations. -
Drinking Water Maximum Contaminant Levels (MCLs)
National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect public... -
2013 EPA Vessels General Permit (VGP)
Information for any vessel that submitted a Notice of Intent (NOI), Notice of Termination (NOT), or annual report under EPA's 2013 Vessel General Permit (VGP). Search results... -
SDWISFED Drinking Water Data
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... -
National Recommended Water Quality Criteria
The National Recommended Water Quality Criteria is a compilation of national recommended water quality criteria for the protection of aquatic life and human health in surface... -
Drinking Water State Revolving Fund
The Drinking Water State Revolving Fund (DWSRF) National Information Management System collects information that provide a record of progress and accountability for the program.... -
Drinking Water Treatability Database (TDB)
The Drinking Water Treatability Database (TDB) presents referenced information on the control of contaminants in drinking water. It allows drinking water utilities, first... -
Beach Advisory and Closing Online Notification (BEACON) system
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 the public-... -
Unregulated Contaminant Monitoring Rule 3 (UCMR 3), (2013-2015) Occurrence Data
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 monitoring for... -
Safe Drinking Water Information System - State System (SDWIS/State)
SDWIS/State is a data system that EPA is developing for states that will improve the quality of drinking water information. -
Wadeable Streams Assessment Data
The Wadeable Streams Assessment (WSA) is a first-ever statistically-valid survey of the biological condition of small streams throughout the U.S. EPA worked with the states to... -
Water Quality Portal
The Water Quality Portal (WQP) is the premiere source of discrete water-quality data in the United States and beyond. This cooperative service integrates publicly available... -
Watershed Assessment, Tracking & Environmental ResultS (WATERS)
The Watershed Assessment, Tracking & Environmental Results (WATERS) is an integrated information system for the nation's surface waters connecting Office of Water databases... -
National Lakes Assessment Data
The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on the extent of... -
Human Health Benchmarks for Pesticides
Advanced testing methods now allow pesticides to be detected in water at very low levels. These small amounts of pesticides detected in drinking water or source water for... -
State-Specific Water Quality Standards Effective under the Clean Water Act (CWA)
EPA has compiled state, territorial, and authorized tribal water quality standards that EPA has approved or are otherwise in effect for Clean Water Act purposes. This... -
State National Pollutant Discharge Elimination System (NPDES) Program Withdrawal Petitions
Search for pending and resolved NPDES withdrawal petitions by state, region, date, or keyword. "Pending" means EPA has received the petition and is working with the state and... -
Six-Year Review Contaminant Occurrence Data
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 appropriate.... -
Estimated Total Nitrogen and Total Phosphorus Loads and Yields Generated within States
Estimated state-wide total nitrogen (TN) and total phosphorus (TP) loads and yields, as predicted by the 2012 regional USGS SPARROW models.Excess nitrogen and phosphorus loading...
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