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Missoula County - Environmental Health

Health Division: Environmental Health
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Environmental Health - Indoor Exposures

Indoor Exposures:  What they are.  What MCCHD can do.


The Environmental Protection Agency (EPA) defines indoor air pollution as chemical, physical or biological contaminants in the breathable air inside a habitable structure or conveyance, such as in homes, schools, offices, and vehicles.

The Agency says that most Americans spend about 90 percent of their time indoors, where pollutant levels may be 2-5 times higher, and occasionally 100 times higher, than outdoors.

Sources of indoor air pollution include natural sources, building materials, products, and occupant activities. 

The Health Department does not do inspections for indoor exposure concerns, but we can give you educational materials that help you locate other professionals who may be able to do onsite inspections and remediation, if necessary.  

Health effects from indoor air pollution range from immediate to long-term, and treatable to severely debilitating or fatal. 

The good news is most Indoor Air Pollution is treatable

For most indoor air quality problems in the home, source control is the most effective solution.

 For more information, visit the EPA website

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