Ellis, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Ellis in?

Ellis is in Lemhi County, EPA Zone 1.

Q: How much does radon mitigation cost in Ellis?

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

Lemhi County

EPA Zone 1

Tucked in Idaho's remote Lemhi County mountains, Ellis sits on volcanic and sedimentary geology that typically produces moderate radon levels in this high-elevation environment. The area's sparse housing includes mountain cabins and rural residences, many with partial basements or crawl spaces adapted to the challenging terrain. With no available radon testing data for zip code 83235, homeowners should prioritize professional testing given the region's geological characteristics.

Ellis, ID Radon Mitigation

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

Ellis, ID Radon Testing

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

Ellis Radon Facts

Key details about the radon risk profile for Ellis and the 83235 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lemhi County, ID

Zip Code

83235

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Ellis and the 83235 zip code are located in Lemhi 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 Ellis, ID

What EPA Radon Zone is Ellis in?

Ellis and the 83235 zip code are in Lemhi 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 Ellis?

Radon mitigation in Ellis 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 Ellis?

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