Laws & Regulations
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Environmental Protection in Indian Country
EPA's efforts to protect human health and the environment of federally recognized Indian tribes by supporting implementation of federal environmental laws consistent with the federal trust responsibility, and the government-to-government relationship.
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Air Quality Designations for Sulfur Dioxide
This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the sulfur dioxide air quality standards.
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Air Quality Designations for Particle Pollution
This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the particle pollution air quality standards.
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Air Quality Designations for Lead
This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the lead air quality standards.
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Monitoring, Assessment and TMDLs: Nevada
An overview of monitoring, assessment and TMDLs in Nevada.
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EPA Documents related to Nevada's 2014 Section 303(d) List of Impaired Waters
Documents detailing Nevada's 2014 Section 303(d) List of Impaired Waters.
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Lake Tahoe Total Maximum Daily Load (TMDL)
Documents related to Lake Tahoe's Total Maximum Daily Load (TMDL).
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EPA's Response Letters to Hawaii's Section 303(d) Lists of Impaired Waters
EPA Response Letters to Hawaii's Section 303(d) Lists of Impaired Waters.
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California’s 2004-2006 Section 303(d) List of Impaired Waters
Documents detailing California’s 2004-2006 Section 303(d) List of Impaired Waters.
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California’s 2008-2010 Section 303(d) List of Impaired Waters
Documents detailing California’s 2008-2010 Section 303(d) List of Impaired Waters.
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UIC Permit for McArthur River Field Trading Bay Unit, Cook Inlet, Alaska (expired)
EPA Underground Injection Control permit for the McArthur River Field Trading Bay Unit, Cook Inlet, Alaska.
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UIC permit for Cosmopolitan Unit, Cook Inlet, Alaska (expired)
Underground Injection Control (UIC) Class I Permit for Cosmopolitan Unit, Cook Inlet, Alaska (AK1I016-A).
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UIC permit for Prudhoe Bay Pad-3, North Slope, Alaska (expired)
EPA Underground Injection Control permit for the Prudhoe Bay Unit Pad-3 Disposal Facility, North Slope, Alaska.
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Infrastructure State Implementation Plan (SIP) Requirements and Guidance
The Clean Air Act requires states to submit SIPs that implement, maintain, and enforce a new or revised national ambient air quality standard (NAAQS) within 3 years of EPA issuing the standard. The Infrastructure SIP is required for all states.
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Draft NPDES Permit for Adjuntas (Olimpia) Water Treatment Plant in Adjuntas, Puerto Rico
EPA's NPDES permit for the Adjuntas (Olimpia) Water Treatment Plant in Adjuntas, Puerto Rico.
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NPDES permit for City of Worley Wastewater Treatment Plant in Idaho
EPA's NPDES wastewater permit for the City of Worley on the Coeur d'Alene Reservation in Idaho.
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West Lake Landfill Superfund Site, Bridgeton, Missouri - Fact Sheet, August 2017
Groundwater Operable Unit 3
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Enforcement of the American Innovation and Manufacturing Act of 2020
Description of the Enforcement of the American Innovation and Manufacturing Act of 2020.
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Draft NPDES Permit for Negros Water Treatment Plant in Corozal, Puerto Rico
EPA's NPDES permit for the Negros Water Treatment Plant in Corozal, Puerto Rico.