"...to protect and enhance indoor environmental quality in California residences, public buildings, and offices." 

The California Department of Public Health's Indoor Air Quality (IAQ) program was the first state IAQ program in the nation when it was created in 1983. Its purpose is to uphold the above, taken from California Assembly Bill 3200 (Tanner, 1982).


  • office
  • cleaningproducts2
  • mold2
  • You spend 90% of your time indoors. What are you breathing?
  • Could the cleaning products used in schools be making asthma worse?
  • If you can see or smell mold, you have a problem.

CAL-IAQ is Recruiting

Opening for a Research Scientist

The Indoor Air Quality (IAQ) Program at the California Department of Public Health (CDPH) is looking for an energetic and collaborative researcher to join our multidisciplinary team of chemists, engineers, an aerobiologist, and an epidemiologist. More Info...

Internship Opportunities

The Indoor Air Quality (IAQ) Program at the California Department of Public Health (CDPH) has several internship positions available for undergraduate and graduate level students. More Info...

Homes/ Buildings for Research

The Indoor Air Quality (IAQ) Program is recruiting indoor environments for our exciting research projects.  Contact us to find out more.


Hiring an IAQ Professional

Before you look for an indoor air professional, assess whether or not you can fix the problem yourself. If you cannot address the problem alone, you may need the help of a professional.

The following hiring guidance will help you determine if you need the help of a professional, questions to ask before you hire someone, and the services you should expect. CDPH allows contractors to register their businesses on this site, but does not endorse the listed businesses.

logo cdph1 California Indoor Air Quality is a program of the California Department of Public Health. It is our mission to investigate indoor air pollution, develop solutions, and promote healthy indoor environments. Read more about our work.

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