Appleton, WA Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 13.00 pCi/L.

Q: What EPA Radon Zone is Appleton in?

Appleton is in Klickitat County, EPA Zone 2.

Q: How much does radon mitigation cost in Appleton?

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

Avg: 13.00 pCi/L

Klickitat County

EPA Zone 2

1 user test

Positioned in Klickitat County along the Columbia River Gorge, Appleton has recorded an average radon level of 13.0 pCi/L, which significantly exceeds the EPA's 4.0 pCi/L action threshold. This elevated reading reflects the area's volcanic bedrock and unique geological conditions that can trap radon gas. Homeowners in the 98602 zip code should prioritize professional radon testing and mitigation given these concerning levels.

13.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Appleton, WA Radon Mitigation

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

Appleton, WA Radon Testing

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

Appleton, Washington Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
13 pCi/L	Appleton, WA	0-20 Years	Full Basement	Feb 2023

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

Appleton Radon Facts

Key details about the radon risk profile for Appleton and the 98602 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Klickitat County, WA

Zip Code

98602

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

13.00 pCi/L

User Tests Submitted

Appleton and the 98602 zip code are located in Klickitat 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 Appleton, WA

What is the average radon level in Appleton, WA?

Based on 1 user-submitted test, the average radon level in Appleton is 13.00 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 Appleton in?

Appleton and the 98602 zip code are in Klickitat 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 Appleton?

Radon mitigation in Appleton 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 Appleton?

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