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Indoor air quality and mold

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The quality of the air in your home can impact your health or the health of those you live with. Most people are aware that outdoor air pollution can significantly affect people's health. However, studies from the Environmental Protection Agency have shown that levels of air pollutants indoors may be anywhere from 2 to 5 times greater than outdoors. In some cases, levels are more than 100 times greater!

Indoor air pollution can be a real concern because people can spend as much as 90% of their time indoors. Much of that time is in their homes. You can have an immediate or long-term reaction to poor indoor air quality. Below, you’ll find links to more information about sources of poor indoor air quality and mold, and what to do about it.

Indoor air quality

Learn strategies to improve indoor air quality, technologies that can help, and tips specific for different types of facilities (restaurants, childcares, shared/congregate housing, etc.)


Learn how to prevent or clean up mold, as well as resources for tenants in King County.