Mold | 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 Mold The Key to Mold Control is Moisture Control If mold is a problem in your home, you must clean up the mold and eliminate sources of moisture. Learn more about mold and moisture control. Was your home in a flood? Learn about flood and mold cleanup. Información relacionada en español. 12 Molds are part of the natural environment, and can be found everywhere, indoors and outdoors. Mold is not usually a problem, unless it begins growing indoors. The best way to control mold growth is to control moisture. This website provides guidance about mold and moisture for homes, schools, multifamily and commercial buildings. Molds can have a big impact on indoor air quality. About mold Learn the basics about mold. Learn about mold Mold and your home Learn what you can do to prevent mold growth in your home. Learn about mold and your home Schools and commercial buildings Learn how to address mold growth in schools and large buildings. Learn tips and strategies Mold cleanup Best practices to safely cleanup mold. Learn best practices to cleanup mold Public health professionals Resources for public health professionals. Find technical knowledge resources Education corner Resources for students, teachers and parents. See education resources Publications Find mold-related publications, factsheets, and infographics. Mold House Take the interactive Mold House tour. Frequently Asked Questions Find answers to your mold-related questions. Stay Informed! Subscribe to Indoor Air Quality email updates. Contact Us about Mold to ask a question, provide feedback, or report a problem. Last updated on August 3, 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.