An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Indoor Air Quality (IAQ)

Contact Us

Indoor Pollutants and Sources

Basic Information on Pollutants and Sources of Indoor Air Pollution

Contact Us to ask a question, provide feedback, or report a problem.

Indoor Air Quality (IAQ)