Jump to main content or area navigation.

Contact Us


Where You Live


Radon Program
Washington State Department of Health
Website: www.doh.wa.gov/ exiting epa
Community and Environment: Radon
Website: www.doh.wa.gov/CommunityandEnvironment/Contaminants/Radon.aspx exiting epa
General questions about public health: (800) 525-0127

Radon Contact: Mike Brennan, Mike.Brennan@doh.wa.gov, (360) 236-3253

Additional Resources

Access Washington: access.wa.gov/ exiting epa

Centers for Disease Control and Prevention's (CDC) Indoor Air Quality Information by state - www.cdc.gov/nceh/airpollution/indoor_air.htm

Top of Page

EPA Resources

National Radon Action Month is in January - Browse Current & Past Events National Radon Action Month Events at www.radonleaders.org/nram/events exiting epa

Map of Radon Zones for Washington
Washington zone map

Click on the image for a larger version | What do the colors mean? | Need a full page version? (PDF, 1 page, 30 K, about PDF)

The purpose of this map is to assist National, State, and local organizations to target their resources and to implement radon-resistant building codes. This map is not intended to be used to determine if a home in a given zone should be tested for radon. Homes with elevated levels of radon have been found in all three zones. All homes should be tested regardless of geographic location. Learn more
Directory of Builders Using Radon-Resistant New Construction
EPA offers the Directory of Builders as a one-stop service to home buyers who are looking for builders that use radon-resistant construction techniques in new homes. The Directory contains the names of builders using RRNC who have voluntarily registered with EPA. EPA encourages all builders that use the recommended radon-resistant techniques to be listed in the Directory. Read more about Radon-Resistant New Construction

See a Listing of States and Jurisdictions with RRNC Codes | Go to a listing of State Building Code Associations | Find Builders offering services in Washington

Go Back to the National Map

EPA Region 10
(Pacific Northwest)

States Covered: AK | ID | OR | WA

Regional Contacts:
Davis Zhen
(206) 553-7660
Tribal Coordinator:
Sally Thomas thomas.sally@epa.gov (206) 553-2102

Featured Links

EPA Resources

Regional Radon Training Centers | IED's Tribal Resources | EPA's State Environmental Agencies List | EPA's MyEnvironment

Health Risks Hotlines Indoor airPLUS Students & Teachers Map of Radon Zones Media Campaigns/Video National Radon Action Month Radon-resistant New Construction Radon and Real Estate Radon and Drinking Water RadonLeaders.org State Radon Contacts SIRG Test & Fix Your Home Webinars Indoor Air

Top of Page

Contact the Web editor to ask a question, provide feedback, or report a problem about this website.

Jump to main content.