Mesa, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Mesa in?

Mesa is in Franklin County, EPA Zone 2.

Q: How much does radon mitigation cost in Mesa?

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

Franklin County

EPA Zone 2

Part of the Kennewick Metro area in Franklin County, Mesa sits in Washington's EPA Zone 2 where moderate radon levels are anticipated. The Columbia River region's geological composition includes basalt formations and sedimentary deposits that can influence radon production and migration patterns. Without local testing data available, residents should conduct their own radon measurements to determine their home's specific risk level.

Mesa, WA Radon Mitigation

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

Mesa, WA Radon Testing

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

Mesa Radon Facts

Key details about the radon risk profile for Mesa and the 99343 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Franklin County, WA

Zip Code

99343

Predicted Screening Level

2–4 pCi/L (Zone 2)

Mesa and the 99343 zip code are located in Franklin County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Mesa, WA

What EPA Radon Zone is Mesa in?

Mesa and the 99343 zip code are in Franklin County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Mesa?

Radon mitigation in Mesa 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 Mesa?

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