Environmental Topics | US EPA Skip to main content An official website of the United States government Here’s how you know Here’s how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Menu Search Search Environmental Topics Environmental Topics Air Bed Bugs Chemicals, Toxics, and Pesticide Emergency Response Environmental Information by Location Health Land, Waste, and Cleanup Lead Mold Radon Research Science Topics Water Topics A-Z Topic Index Laws & Regulations Laws & Regulations By Business Sector By Topic Compliance Enforcement Guidance Laws and Executive Orders Regulations Report a Violation Report a Violation Environmental Violations Fraud, Waste or Abuse About EPA About EPA Our Mission and What We Do Headquarters Offices Regional Offices Labs and Research Centers Planning, Budget, and Results Organization Chart EPA History Environmental Topics EPA Environmental Topics EPA's environmental topics guides you to the most popular pages in your topic of interest. Find EPA Articles and News Releases related to popular topics. Search the A-Z Topic Index for specific terms. 1 Español عربى 中文: 简体版 中文: 繁體版 Kreyòl ayisyen 한국어 Português Pусский Tagalog Tiếng Việt Air Acid Rain Criteria (NAAQS) Air Pollutants Particulate Matter (PM) Greenhouse Gas (GHG) Emissions Air Topics Chemicals, Pesticides, and Toxics Chemicals under the Toxic Substances Control Act (TSCA) Formaldehyde Managing Chemical Risks Per- and Polyfluoroalkyl Substances (PFAS) Chemicals, Pesticides, and Toxics Topics Environmental Information by Location Cleanups in My Community Radon Zones: Maps and Supporting Documents by State Toxic Chemical Releases More Location-Specific Info Greener Living Energy and the Environment Greener Products and Services Reduce, Reuse, Recycle Sustainability Health Children's Health Protection Coronavirus (COVID-19) Endocrine Disruption Human Health Risk Assessment Pesticides and Food: Healthy, Sensible Food Practices Health Topics Land, Waste, and Cleanup Cleanups Household Hazardous Waste (HHW) Landfills Learn About Hazardous Waste Recycling Land, Waste, and Cleanup Topics Science Citizen Science for Environmental Protection Environmental Measurements and Modeling EPA Science Models and Research Tools (SMaRT) Search Research at EPA Research Grants More Science Topics Water Drinking Water Basics Lakes and Rivers Local Water Quality Reports National Aquatic Resource Surveys Wastewater Treatment Watersheds Water Topics More Environmental Topics Bed Bugs Climate Change Children's Health Lead ​Mold ​Pesticides Radon EPA News Releases EPA Marks Two Cleanup Milestones and Announces Public Meeting for the Kerr-McGee Superfund Site in Navassa, NC .S. Environmental Protection Agency (EPA) Region 4 announced two major milestones in the ongoing cleanup and revitalization efforts at the Kerr-McGee Chemical Corp. Release Date: August 14, 2026 New Hampshire: EPA and DOJ Protect Water Resources and Communities through Agreement to Stop Illegal Discharges EPA and the U.S. Department of Justice (DOJ) announced a settlement agreement with Old Dutch Mustard Co., Inc., a mustard and vinegar manufacturing company, resolving violations of the Clean Water Act. Release Date: August 13, 2026 EPA Proposes Next Step in Chemsol Groundwater Cleanup in Piscataway, New Jersey EPA is proposing the next step in the cleanup of the Chemsol, Inc. Superfund site in Piscataway, New Jersey, with a plan to address contaminated groundwater that has moved beyond the former Chemsol, Inc. facility’s property. Release Date: August 13, 2026 EPA Issues New Checklist to Help States Proactively Strengthen Drinking Water Systems Today, U.S. Environmental Protection Agency (EPA) released an important guidance document for state partners that are working to ensure public water systems are meeting drinking water standards. Release Date: August 13, 2026 Search all News Releases Contact Us to ask a question, provide feedback, or report a problem. Last updated on July 6, 2026 Assistance Spanish Arabic Chinese (simplified) Chinese (traditional) French Haitian Creole Korean Portuguese Russian Tagalog Vietnamese Discover. Accessibility Statement Budget & Performance Contracting EPA www Web Snapshot Grants No FEAR Act Data Plain Writing Privacy and Security Notice Connect. Data Inspector General Jobs Newsroom Regulations.gov Subscribe USA.gov White House Ask. Contact EPA EPA Disclaimers Hotlines FOIA Requests Frequent Questions Site Feedback Follow.