Randolph, WI Radon Mitigation and Testing

Q: What EPA Radon Zone is Randolph in?

Randolph is in Columbia County, EPA Zone 2.

Q: How much does radon mitigation cost in Randolph?

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

Columbia County

EPA Zone 2

Located in Columbia County within the Madison Metro area, Randolph sits on glacial deposits over sedimentary bedrock that contributes to Wisconsin's elevated radon potential. The community's housing stock includes rural farmsteads and suburban-style homes, many with full basements typical of Wisconsin construction. Given the absence of local testing data for zip code 53956, residents should conduct radon testing to establish their baseline exposure levels.

Randolph, WI Radon Mitigation

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

Randolph, WI Radon Testing

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

Randolph Radon Facts

Key details about the radon risk profile for Randolph and the 53956 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Columbia County, WI

Zip Code

53956

Predicted Screening Level

2–4 pCi/L (Zone 2)

Randolph and the 53956 zip code are located in Columbia 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 Randolph, WI

What EPA Radon Zone is Randolph in?

Randolph and the 53956 zip code are in Columbia 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 Randolph?

Radon mitigation in Randolph 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 Randolph?

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 Wisconsin

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

City	Avg User Radon Level	Submissions
Milwaukee	10.00 pCi/L	3
Prairie Du Chien	10.00 pCi/L	2
Stevens Point	5.50 pCi/L	2
Menomonie	10.00 pCi/L	1
Delavan	6.00 pCi/L	1
Shawano	No submissions	0
Sturgeon Bay	No submissions	0