Learn the Issues

Archived: Alternative Measurement Protocols for Biogas and Renewable Natural Gas

This page has past year approved alternative measurement protocols under the biogas regulatory reform provisions.

Fuel Economy

Information on fuel economy labeling, history and trends of fuel economy, testing and data, and information on how federal agencies work together on the issue of fuel economy.

Part One: The Multiple Benefits of Energy Efficiency and Renewable Energy

Chapter 1 of “Assessing the Multiple Benefits of Clean Energy” provides an introduction to the document."

Part Two - Chapter Five: Estimating the Economic Benefits of Energy Efficiency and Renewable Energy

Find out more about the case studies highlighted in each chapter of "Assessing the Multiple Benefits of Clean Energy" and the key benefits.

India Coal Mine Methane Market Study

Provides a national overview of India’s energy markets and identifies CMM utilization and emissions reduction opportunities in India

Supporting Communities

Landing page for Supporting Communities

Section 15: Surface Water - Ground Water to Surface Water Component

Learn about surface water targets, which can be threatened by the release of contaminated ground water.

Lead at Superfund Sites: Frequent Questions from the General Public

Read frequent questions and answers about lead from the general public.

SERC-TERC Update: January 2023

SERC-TERC Update: January 2023

SERC-TERC Updates: April 2025

April SERC newsletter

National Security Memoranda and Presidential Directives

Three of these directives directly affect EPA's role in the national emergency response system: HSPD-5 Management of Domestic Incidents; HSPD-7 Critical Infrastructure Identification, Prioritization, and Protection; and HSPD-8 National Preparedness.

Technical Assistance at the Colonial Creosote Superfund Site in Louisiana

Details about the public meeting on April 9, 2026, to provide information about technical assistance opportunities for the community living near the Colonial Creosote Superfund site in Bogalusa, Louisiana.

• Date: April 9, 2026

NPDES Permits around the Nation

Find National Pollutant Discharge Elimination System (NPDES) wastewater permits issued by EPA across the nation.

AVoided Emissions and geneRation Tool (AVERT)

Use AVERT to estimate the regional, state, and county PM2.5, NOX, SO2, CO2, NH3, and VOC emissions impacts of energy efficiency and renewable energy policies. Designed to help air quality planners, energy office and PUC staff evaluate policies.

CO-Benefits Risk Assessment Health Impacts Screening and Mapping Tool (COBRA)

Use COBRA to explore and map how changes in air pollution (PM2.5, S02, NOX, NH3, VOCs) from clean energy policies and programs affect human health at the county, state, regional, or national levels. Estimate the economic value of these health benefits.

WIFIA Annual Report

WIFIA Annual Report

EPA's Coral Reef Partners

Coral reefs are among the most biologically diverse and valuable ecosystems on Earth. This web site describes the importance of coral reefs, threats to them, and ongoing efforts to protect them.

STOrage and RETrieval/Water Quality Exchange: Related Links

A page of many links to various resources associated with or relevant to STORET and WQX.

Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2021

View or download the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2021, including individual chapters and annexes.

Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2020

View or download the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2020, including individual chapters and annexes.