Laws & Regulations

Tribal Programs in the Pacific Northwest and Alaska

Resources for environmental protection in Indian Country in EPA’s Region 10, serving tribes in Alaska, Idaho, Oregon, Washington.

Congressional and Intergovernmental Relations

EPA-Approved Modoc County Air District Regulations in the California SIP

EPA approved and compiled rules and regulations for the Modoc County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).

EPA-Approved Source-Specific Requirements: Sacramento AQMD, San Joaquin Valley Unified APCD, South Coast AQMD

EPA-Approved Source-Specific Requirements for Sacramento Metropolitan AQMD, San Joaquin Valley Unified APCD, and South Coast AQMD, incorporated by reference in the applicable State Implementation Plan (SIP).

EPA-Approved Local Jurisdiction Ordinances and Municipal Code: Coachella Valley Jurisdictions; Town of Mammoth, City of Portola

EPA approved and compiled California Local Jurisdiction Ordinances and Municipal Code for Coachella Valley Jurisdictions, Town of Mammoth, and the City of Portola, incorporated by reference in the applicable State Implementation Plan (SIP).

EPA-Approved Statewide Statutes and State Regulations in the California SIP

This page lists EPA approved and compiled California statewide statutes and regulations incorporated by reference in the applicable State Implementation Plan (SIP).

Six-Year Review of Drinking Water Standards

Learn about EPA's process and outcomes for identifying drinking water standards that may need revision to strengthen public health protection or improve efficiency of implementation.

EPA Non-Regulatory Health-Based Drinking Water Levels

EPA Non-Regulatory Health-Based Drinking Water Levels - Find information on water contaminants' effects on human health, including advisory tables and documents and benchmarks for pesticides.

Supporting Materials: Final Revisions to the Lead and Copper Rule

LCR, drinking water, lead and copper, lead, final LCR

Basic Information about Wyoming and Tribal Drinking Water Programs in EPA Region 8

This website is designed for the use of owners, operators and administrative staff who work at public water supply systems in Wyoming and on Tribal lands within jurisdiction of US Region 8

State Progress Toward Adopting Numeric Nutrient Water Quality Criteria for Nitrogen and Phosphorus

The progress states are making towards the development of numeric criteria for phosphorus and nitrogen pollution.

Superfund Redevelopment Program

Tools and resources including what is Superfund redevelopment, protecting human health and the environment, performance, contacts, promoting strategies, partnerships, and policy.

Region 8 NPDES Drinking Water General Permit

The Region 8 NPDES Drinking Water General Permit was finalized and public noticed in the Federal Register on April 17, 2019. The final permits are effective as of July 31, 2019.

Highlights about State and Tribal Brownfields Response Programs

State & Tribal Program News

Lake Burger Holdings, LLC - Clean Water Act Public Notice

The EPA is providing notice of a proposed Administrative Penalty Assessment against Lake Burger Holdings, LLC for alleged violations stemming from Respondent’s violation of the Spill Prevention, Control, and Countermeasure requirements of 40 C.F.R. Part 1