Lewiston, UT Radon Mitigation and Testing

Q: What EPA Radon Zone is Lewiston in?

Lewiston is in Cache County, EPA Zone 2.

Q: How much does radon mitigation cost in Lewiston?

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

Cache County

EPA Zone 2

Situated in Cache County as part of the Logan Metro area, Lewiston lies in EPA Zone 2 where moderate radon potential exists throughout northern Utah's valley regions. The community's location in Cache Valley, with its alluvial soils and nearby mountain geology, can influence radon levels in residential properties. With limited testing data available for zip code 84320, local homeowners should prioritize radon testing to assess their homes' individual risk levels.

Lewiston, UT Radon Mitigation

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

Lewiston, UT Radon Testing

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

Lewiston Radon Facts

Key details about the radon risk profile for Lewiston and the 84320 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Cache County, UT

Zip Code

84320

Predicted Screening Level

2–4 pCi/L (Zone 2)

Lewiston and the 84320 zip code are located in Cache 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 Lewiston, UT

What EPA Radon Zone is Lewiston in?

Lewiston and the 84320 zip code are in Cache 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 Lewiston?

Radon mitigation in Lewiston 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 Lewiston?

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 Utah

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

City	Avg User Radon Level	Submissions
Vernal	8.60 pCi/L	5
Logan	8.00 pCi/L	5
Smithfield	12.00 pCi/L	4
Bountiful	6.75 pCi/L	4
Cedar City	4.50 pCi/L	4
Eagle Mountain	10.67 pCi/L	3
Heber City	5.00 pCi/L	3
Brigham City	9.00 pCi/L	1
Lehi	7.00 pCi/L	1
Saint George	No submissions	0
Sandy	No submissions	0