Princeton, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Princeton in?

Princeton is in Latah County, EPA Zone 1.

Q: How much does radon mitigation cost in Princeton?

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

Latah County

EPA Zone 1

Princeton lies in Latah County in northern Idaho's Palouse region, where loess deposits over Columbia River basalt create high radon potential across the area. While specific testing data for ZIP code 83857 remains limited, the region's EPA Zone 1 classification and typical northern Idaho construction with basements warrant careful radon testing. The community's rolling prairie geography and underlying geological formations make professional radon assessment essential for homeowners.

Princeton, ID Radon Mitigation

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

Princeton, ID Radon Testing

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

Princeton Radon Facts

Key details about the radon risk profile for Princeton and the 83857 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Latah County, ID

Zip Code

83857

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Princeton and the 83857 zip code are located in Latah 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 Princeton, ID

What EPA Radon Zone is Princeton in?

Princeton and the 83857 zip code are in Latah 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 Princeton?

Radon mitigation in Princeton 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 Princeton?

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