Environmental Protection Agency
The Environmental Protection Agency (EPA) is proposing a drinking water regulation for arsenic, as required by the 1996 amendments to the Safe Drinking Water Act (SDWA). The proposed health- based, non-enforceable goal, or Maximum Contaminant Level Goal (MCLG), for arsenic is zero, and the proposed enforceable standard, or maximum contaminant level (MCL), for arsenic is 0.005 mg/L. EPA is also requesting comment on 0.003 mg/L, 0.010 mg/L and 0.020 mg/L for the MCL. EPA is listing technologies that will meet the MCL, including affordable compliance technologies for three categories of small systems serving less than 10,000 people. This proposal also includes monitoring, reporting, public notification, and consumer confidence report requirements and State primacy revisions for public drinking water programs affected by the arsenic regulation. In addition, in this proposal the Agency is clarifying compliance for State-determined monitoring after exceedances for inorganic, volatile organic, and synthetic organic contaminants. Finally, EPA is proposing that States will specify the time period and sampling frequency for new public water systems and systems using a new source of water to demonstrate compliance with the MCLs. The requirement for new systems and new source monitoring will be effective for inorganic, volatile organic, and synthetic organic contaminants.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Parts 141 and 142 [WH-FRL-6707-2] RIN 2040-AB75 AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of proposed rulemaking. SUMMARY: The Environmental Protection Agency (EPA) is proposing a drinking water regulation for arsenic, as required by the 1996 amendments to the Safe Drinking Water Act (SDWA). The proposed health-based, non-enforceable goal, or Maximum Contaminant Level Goal (MCLG), for arsenic is zero, and the proposed enforceable standard, or maximum contaminant level (MCL), for arsenic is 0.005 mg/L. EPA is also requesting comment on 0.003 mg/L, 0.010 mg/L and 0.020 mg/L for the MCL. EPA is listing technologies that will meet the MCL, including affordable compliance technologies for three categories of small systems serving less than 10,000 people. This proposal also includes monitoring, reporting, public notification, and consumer confidence report requirements and State primacy revisions for public drinking water programs affected by the arsenic regulation. In addition, in this proposal the Agency is clarifying compliance for State-determined monitoring after exceedances for inorganic, volatile organic, and synthetic organic contaminants. Finally, EPA is proposing that States will specify the time period and sampling frequency for new public water systems and systems using a new source of water to demonstrate compliance with the MCLs. The requirement for new systems and new source monitoring will be effective for i…
Citation: 65 FR 38888
