Laws & Regulations

EPA R8 Drinking Water System Basic Information Form

This form should be completed and submitted to EPA Region 8 when a water system in EPA R8 is being evaluated to determine if it may be serving drinking water to the public.

EPA R8 Public Water System Contact Change Form

This form should be completed and submitted to EPA Region 8 when there is a change to management or other contact information for a Public Water System in Wyoming or located on Tribal Lands in EPA Region 8.

PWS Seasonal Operational Change Form

This form should be completed and submitted to EPA Region 8 when a Public Water System is making permanent changes to the season they are serving water to the public.

SEMS Search User Guide

Superfund is a program administered by the EPA to locate, investigate, and clean up the worst hazardous waste sites throughout the United States.

National Water Program End of the Year Performance Reports and Best Practices

Each year, EPA's Office of Water conducts an assessment of the end of the year results for all performance measures of the National Water Program to determine progress in meeting the goals outlined in the Agency's Strategic Plan and NWPG.

Drinking Water Consumer Confidence Reports in Wyoming and Tribal Lands in EPA Region 8

This page provides information about Consumer Confidence Reports (CCR) and Tools for Preparing a CCR

U.S. Court of Appeals—D.C. Circuit Upholds EPA's Action to Reduce Greenhouse Gases under the Clean Air Act

View greenhouse gas court decisions.

Pathogen Equivalency Committee

Information related to Pathogen Equivalency Committee

Application Guidelines

Application Guidelines for Equivalency Recommendation by the U.S. EPA’s Pathogen Equivalency Committee (PEC)

Compliance and Annual Biosolids Reporting

Information related to Compliance and Annual Biosolids Reporting

Laboratory Approval Program for the Unregulated Contaminant Monitoring Rule (UCMR 5)

This page contains information about The UCMR Laboratory Approval Program.

Overview of the Safe Drinking Water Act

An overview of the Safe Drinking Water Act.

2021 Human Health Benchmarks for Pesticides

2021 Human Health Benchmarks for Pesticides information on water contaminants' effects on human health, including documents and benchmarks for pesticides.

Review of the LT2 Rule

EPA's Long Term 2 Enhanced Surface Treatment Rule Review

Six-Year Review 3 Compliance Monitoring Data (2006-2011)

Six-year review 3 occurrence data

Support Documents for EPA’s Third Review of Existing Drinking Water Standards

The support documents for the Six-Year Review 3 of existing National Primary Drinking Water Standards contain extensive information including protocol for the review, and chemical contaminant health effects among others

Final Second Five-Year Review Documents (04/11/19)

Documents supporting the Final Second Five-Year Review

Draft NPDES Permit for Cayey Water Treatment Plant

EPA's NPDES water permit for the Cayey Water Treatment Plant.

Draft NPDES Permit for San Lorenzo Water Treatment Plant

EPA's NPDES water permit for the San Lorenzo Water Treatment Plant.

Draft NPDES Permit for Maginas Water Treatment Plant

EPA's NPDES water permit for the Maginas Water Treatment Plant.