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Indoor Air Quality Reports 

See indoor air quality (IAQ) reports for Massachusetts cities and towns.

Indoor Air Quality - Facts and Resources 

See reports, guidelines, school checklists, and more.


Radon is a radioactive gas that comes from the ground. Learn about the risks it poses, how to test your home for it, how to fix high radon levels, and what guidance is available.

Sources of Indoor Air Pollution 

Learn about what can cause indoor air pollution, the risks, and how to manage and prevent it.

Mold, Moisture, and Mildew 

Information on ways to prevent and remediate mold growth in buildings, such as schools, buildings, and residences.

Apartments, Homes, and Condos 

Information for Apartments, Homes, and Condos relative to indoor conditions.