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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.

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.

Learn about Mold

magnifying glass over the word mold
Learn about mold growth indoors, including topics like:
  • Ten Things You Should Know
  • Mold and Health
  • Mold Cleanup in Your Home
  • Mold Testing or Sampling
  • More...

Homes

houses
Learn about mold growth in homes, including topics like:
  • Mold and Your Home
  • Should You Have the Air Ducts in Your Home Cleaned?
  • Flood Cleanup to Protect Indoor Air Quality  
  • More...

In the Spotlight

  • Learn about state and local laws that apply to IAQ conditions in rental properties. Visit Environmental Law Institute’s  Indoor Air Quality in Rental Dwellings and Indoor Air Quality Guide for Tenants.
  • The National Institute of Occupational Safety and Health recently released Dampness and Mold Assessment Tool for Schools and General Buildings.

Some products have been recalled for mold problems. Check SaferProducts.gov, the Publicly Available Consumer Product Safety Information Database website of the U.S. Consumer Product Safety Commission (CPSC).

Resources for Health Professionals

hand about to type on keyboard
Find useful resources to gain more technical knowledge and to help you connect with your audience about mold and indoor air quality. 
  • Learn the Facts and Find Your Resources
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Subscribe to Indoor Air Quality Email Updates

Learn about upcoming IAQ meetings, webinars, events and more!

Schools and Commercial Buildings

school grounds with swing set
Learn about mold growth in schools, including topics like:
  • Mold and Indoor Air Quality in Schools
  • Mold Remediation in Schools and Commercial Buildings
  • More Resources...
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Download or print the Mold Infographic!
Related Topics
  • Indoor Air Quality Home Page 
  • Frequent Questions about Mold 
  • Mold Publications 
    • (En Español)
  • Emergency Preparedness and Recovery Related to Mold
    • Power Outages
    • Flood Cleanup
    • Mold Cleanup
  • Healthy Home Performance 
    • Indoor airPLUS 
    • Ventilation Improvements 
    • Moisture Control 
    • Protocols for Home Energy Upgrades

Mold House

Illustrated cross section of a house

Take the interactive Mold House tour or view the Text Version.

Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 31, 2025
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