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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... -
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... -
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... -
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.... -
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.... -
Contaminant Candidate List 1
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 anticipated to occur... -
National Contaminant Occurrence Database (NCOD)
NCOD is a repository of drinking water quality data to be made available to EPA decision makers and the public. -
Contaminant Candidate List 2
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 anticipated to occur... -
Distribution (State Allotment) of Drinking Water State Revolving Fund Appropriation from the American Recovery and Reinvestment Act of 2009 (ARRA)
The ARRA appropriation for the DWSRF program is $2,000,000,000. DWSRF allotments are based on percentages derived from the 2003 Drinking Water Infrastructure Needs Survey. For... -
Unregulated Contaminant Monitoring Program Data
EPA uses the Unregulated Contaminant Monitoring (UCM) program to collect data for contaminants suspected to be present in drinking water, but that do not have health-based... -
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... -
Unregulated Contaminant Monitoring Rule 2 (UCMR 2), (2008-2010) Occurrence Data
The Unregulated Contaminant Monitoring Rule supporting the second cycle (UCMR 2) of monitoring, conducted under EPA oversight, was published in the Federal Register on January... -
Contaminant Candidate List 3
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...
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