Brewster, WA Radon Mitigation and Testing

Q: What is the average radon level in Brewster, WA?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Brewster in?

Brewster is in Okanogan County, EPA Zone 1.

Q: How much does radon mitigation cost in Brewster?

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

Avg: 4.00 pCi/L

Okanogan County

EPA Zone 1

1 user test

Located in Okanogan County in north-central Washington, Brewster has recorded an average radon level of 4.0 pCi/L, which meets the EPA action threshold. Built in a valley setting with volcanic and sedimentary geology, homes in zip code 98812 should continue monitoring radon levels regularly. The area's EPA Zone 1 classification reflects moderate-to-high radon potential from underlying rock formations.

4.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Brewster, WA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Brewster, WA Radon Mitigation

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

Brewster, WA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Brewster, Washington Radon Levels

User-submitted radon test readings from homes in the Brewster area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Brewster, WA	51-99 Years	Full Basement	Jun 2023

Have a radon test result for Brewster? Submit your reading to help other homeowners.

Brewster Radon Facts

Key details about the radon risk profile for Brewster and the 98812 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Okanogan County, WA

Zip Code

98812

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Brewster and the 98812 zip code are located in Okanogan County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Brewster, WA

What is the average radon level in Brewster, WA?

Based on 1 user-submitted test, the average radon level in Brewster is 4.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Brewster in?

Brewster and the 98812 zip code are in Okanogan County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Brewster?

Radon mitigation in Brewster 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 Brewster?

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.60 pCi/L	5
Seattle	5.25 pCi/L	4
Olympia	5.00 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
Washougal	8.00 pCi/L	1
Ridgefield	5.00 pCi/L	1
Moses Lake	No submissions	0