Mica, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Mica in?

Mica is in Spokane County, EPA Zone 1.

Q: How much does radon mitigation cost in Mica?

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

Spokane County

EPA Zone 1

Located in Spokane County within EPA Zone 1, Mica sits in an area with high radon potential due to eastern Washington's granite-based geology and uranium-bearing rock formations. Although specific testing data remains limited for this small community, the region's geological characteristics and rural housing patterns warrant careful attention to radon risk. Homeowners should consider professional testing, particularly given the prevalence of basements and crawl spaces in this area.

Mica, WA Radon Mitigation

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

Mica, WA Radon Testing

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

Mica Radon Facts

Key details about the radon risk profile for Mica and the 99023 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Spokane County, WA

Zip Code

99023

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Mica and the 99023 zip code are located in Spokane 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 Mica, WA

What EPA Radon Zone is Mica in?

Mica and the 99023 zip code are in Spokane 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 Mica?

Radon mitigation in Mica 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 Mica?

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