Learn the Issues

Expert Workshop: Nutrient Enrichment Indicators in Streams

Method 22 - Visual Determination of Fugitive Emissions

CFR Promulgated Test Method 22 Visual Determination of Fugitive Emissions From Material Sources and Smoke Emissions From Flares

Publications about Asthma

EPA provides the general public, partners, media outlets and health care professionals with a wide variety of asthma resources at no-cost. EPA develops resources to share information about asthma, its triggers, and comprehensive asthma management.

Air Quality Management Process Cycle

Air quality management are activities a regulatory authority undertakes to protect human health and the environment from the harmful effects of air pollution. The process of managing air quality can be illustrated as a cycle of inter-related elements.

Highlights from the Clean Air Act 40th Anniversary

On September 14, 2010, EPA celebrated the 40th anniversary of the Clean Air Act with a conference to examine the successes and challenges of the Clean Air Act.

HABs FAQ

Frequently asked questions tool for harmful algal blooms (HABs)

Subpart MM RTR Final Rule Supporting Documentation

Technical supporting documentation for the final RTR

National Coastal Condition Assessment- Related Studies

Map of National Aquatic Resource Surveys Sampling Locations

This map displays all of the lakes, rivers and streams, wetlands, and coastal waters sampled by the National Aquatic Resource Surveys, a collaborative EPA program that assesses the condition of the nation's waters using statistical designs.

GreenChill Program

GreenChill Advanced Refrigeration Partnership

Frequently Asked Questions: Control Devices

This page will take you to frequently asked questions about EPA's 2024 air regulations for the oil and natural gas industry.

Frequent Questions regarding AK-225: What are the rules starting January 1, 2015?

FAQs regarding an exemption to allow owners of existing inventory of virgin HCFC-225ca, HCFC-225cb, or mixtures thereof to continue using their inventory as a solvent after January 1, 2015.

Guidance For Safe Handling of Refrigerant-containing Appliances/Vehicles After Natural Disasters

GUIDANCE FOR SAFE HANDLING OF
REFRIGERANT CONTAINING APPLIANCES/VEHICLES
AFTER NATURAL DISASTERS.

Lakes Presenting Risk for Exposure to Harmful Algal Toxins

Ground-level Ozone Pollution

Known as tropospheric or "ground-level" ozone, this gas is harmful to human heath and the environment. Since it forms from emissions of volatile organic compounds (VOCs) and nitrogen oxides (NOx), these pollutants are regulated under air quality standards.

Geographic Locations: Montana, Rocky Mountains