Cambria, WI Radon Levels

Q: What EPA Radon Zone is Cambria in?

Cambria is in Columbia County, EPA Zone 2.

Q: How much does radon mitigation cost in Cambria?

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

Check local Cambria radon levels and find certified testing and mitigation professionals to keep your home safe

Cambria, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Columbia County, WI

Zip Code 53923

Situated in Columbia County within the Madison Metro area, Cambria lies in Wisconsin's glacial landscape where prairie meets rolling hills. The community features a mix of historic homes and newer construction, many with full basements typical of Wisconsin residential architecture. Limited testing data exists for the 53923 area, though the underlying glacial deposits and bedrock geology suggest homeowners should prioritize radon testing.

7.25

pCi/L area average

Above EPA Action Level

Columbia County average: 7.25 pCi/L, based on 4 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Cambria itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Cambria, WI Radon Mitigation

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

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Radon Readings Near Cambria, WI

No homeowner tests have been submitted for Cambria yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Pardeeville	10.9 mi	4.00 pCi/L	1
Fall River	12.2 mi	10.00 pCi/L	1
Beaver Dam	15.8 mi	10.00 pCi/L	1
Portage	17.9 mi	9.00 pCi/L	1
Green Lake	20.2 mi	6.00 pCi/L	1
Arlington	21.0 mi	6.00 pCi/L	1
Juneau	25.4 mi	4.00 pCi/L	1
Watertown	30.7 mi	7.00 pCi/L	1

Columbia County Radon Profile

EPA mapping assigns Columbia County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 4 cities in Columbia County average 7.25 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Columbia County home regardless of zone or a neighbor's results.

Radon FAQ for Cambria, WI

What EPA Radon Zone is Cambria in?

Cambria and the 53923 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.

Why are radon readings shown from areas near Cambria?

No homeowner radon tests have been submitted for Cambria yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Columbia County average—are the best available indicator of local conditions until Cambria homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Cambria?

Radon mitigation in Cambria 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 Cambria?

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.