Lewisville, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Lewisville in?

Lewisville is in Jefferson County, EPA Zone 2.

Q: How much does radon mitigation cost in Lewisville?

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

Jefferson County

EPA Zone 2

Located in Jefferson County within the Idaho Falls Metro area, Lewisville sits in EPA Zone 2 where moderate radon potential exists across eastern Idaho's Snake River Plain. The region's volcanic soils and underlying basalt formations can influence radon levels in residential properties throughout the valley. With limited testing data available for zip code 83431, homeowners should prioritize radon testing to determine their specific indoor air quality risk.

Lewisville, ID Radon Mitigation

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

Lewisville, ID Radon Testing

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

Lewisville Radon Facts

Key details about the radon risk profile for Lewisville and the 83431 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Jefferson County, ID

Zip Code

83431

Predicted Screening Level

2–4 pCi/L (Zone 2)

Lewisville and the 83431 zip code are located in Jefferson 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 Lewisville, ID

What EPA Radon Zone is Lewisville in?

Lewisville and the 83431 zip code are in Jefferson 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 Lewisville?

Radon mitigation in Lewisville 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 Lewisville?

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 Idaho

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

City	Avg User Radon Level	Submissions
Idaho Falls	7.29 pCi/L	7
Hailey	7.83 pCi/L	6
Post Falls	9.00 pCi/L	5
Coeur D Alene	9.00 pCi/L	4
Moscow	7.75 pCi/L	4
Victor	6.67 pCi/L	3
Driggs	16.00 pCi/L	2
Hayden	8.50 pCi/L	2
Pocatello	8.50 pCi/L	2
Eagle	6.00 pCi/L	1
Boise	No submissions	0
Nampa	No submissions	0
Sandpoint	No submissions	0