Brinnon, WA Radon Levels

Q: What EPA Radon Zone is Brinnon in?

Brinnon is in Jefferson County, EPA Zone 3.

Q: How much does radon mitigation cost in Brinnon?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Brinnon radon levels and find certified testing and mitigation professionals to keep your home safe

Brinnon, WA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Jefferson County, WA

Zip Code 98320

Positioned in Jefferson County along Washington's Olympic Peninsula, Brinnon's coastal location on marine sedimentary deposits generally produces lower radon levels, though individual homes can still experience variation. The area's housing stock includes both waterfront properties and inland residences, with foundation types adapted to the region's unique environmental conditions. While radon testing data for zip code 98320 remains limited, homeowners should still test to establish baseline readings for their properties.

Brinnon, WA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Brinnon?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Jefferson County Pros

1-800-299-3578 206-973-0096 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon FAQ for Brinnon, WA

What EPA Radon Zone is Brinnon in?

Brinnon and the 98320 zip code are in Jefferson County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Brinnon?

Radon mitigation in Brinnon typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Brinnon?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Washington

Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.50 pCi/L	6
Olympia	7.00 pCi/L	5
Seattle	5.25 pCi/L	4
Bellevue	3.75 pCi/L	4
Spokane	11.67 pCi/L	3
Camas	8.00 pCi/L	3
Centralia	7.00 pCi/L	3
Bellingham	4.50 pCi/L	2
Kirkland	4.50 pCi/L	2