Platteville, WI Radon Levels

Q: What EPA Radon Zone is Platteville in?

Platteville is in Grant County, EPA Zone 1.

Q: How much does radon mitigation cost in Platteville?

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

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

Platteville, WI Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Grant County, WI

Zip Code 53818

Historic Platteville in Grant County sits in Wisconsin's Driftless Area, where thin soils over limestone and dolomite bedrock create some of the nation's highest radon potential. Testing data for the 53818 area is limited, but the geological conditions strongly favor significant radon gas production and accumulation. Homeowners throughout this Madison Metro community should prioritize radon testing, as the region's unique karst geology and older homes with stone foundations create ideal conditions for radon entry.

17.00

pCi/L area average

Above EPA Action Level

Grant County average: 17.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Platteville 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+

Platteville, WI Radon Mitigation

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

Need Radon Mitigation or Testing in Platteville?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Grant County Pros

1-800-299-3578 608-318-4941 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Platteville, WI

No homeowner tests have been submitted for Platteville 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
Potosi	11.5 mi	17.00 pCi/L	1
Ridgeway	31.2 mi	8.00 pCi/L	1
Blue River	34.7 mi	6.00 pCi/L	1
Spring Green	37.5 mi	4.00 pCi/L	1
Blue Mounds	37.7 mi	15.00 pCi/L	1
Prairie Du Chien	38.3 mi	10.00 pCi/L	2
Mount Horeb	41.8 mi	9.00 pCi/L	1
New Glarus	43.0 mi	7.00 pCi/L	1

Grant County Radon Profile

Because of its underlying geology, Grant County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Grant County average 17.00 pCi/L across 1 test — 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 Grant County home regardless of zone or a neighbor's results.

Radon FAQ for Platteville, WI

What EPA Radon Zone is Platteville in?

Platteville and the 53818 zip code are in Grant 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.

Why are radon readings shown from areas near Platteville?

No homeowner radon tests have been submitted for Platteville yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Grant County average—are the best available indicator of local conditions until Platteville 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 Platteville?

Radon mitigation in Platteville 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 Platteville?

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.