Ixonia, WI Radon Levels

Q: What EPA Radon Zone is Ixonia in?

Ixonia is in Jefferson County, EPA Zone 1.

Q: Why are radon readings shown from areas near Ixonia?

No homeowner radon tests have been submitted for Ixonia yet, so readings from the closest cities and the Jefferson County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Ixonia?

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

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

Ixonia, WI Radon Facts

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

County Jefferson County, WI

Zip Code 53036

Part of the Milwaukee Metro area in Jefferson County, Ixonia sits on glacial till deposits characteristic of southeastern Wisconsin. Testing data is currently limited for zip code 53036, making radon assessment a priority for local homeowners. Wisconsin's glacial soils and traditional basement construction create conditions where radon can accumulate significantly in below-grade living spaces.

7.00

pCi/L area average

Above EPA Action Level

Jefferson County average: 7.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Ixonia 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+

Ixonia, 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 Ixonia, WI

No homeowner tests have been submitted for Ixonia yet, so the closest user-submitted readings from neighboring communities are shown below. Radon varies by home — testing is the only way to know your level.

Radon Level	City	Distance	Home Age	Foundation	Submitted
7 pCi/L	Watertown, WI	8.8 mi	21-50 Years	Full Basement	May 2018
10 pCi/L	Pewaukee, WI	16.6 mi	0-20 Years	Full Basement	Jul 2022
4 pCi/L	Juneau, WI	16.7 mi	100+ Years	Full Basement	Nov 2024
5 pCi/L	Waukesha, WI	19.8 mi	0-20 Years	Partial Basement	Aug 2019
6 pCi/L	Waukesha, WI	19.8 mi	0-20 Years	Full Basement	Apr 2017
20 pCi/L	Slinger, WI	20.0 mi	21-50 Years	Full Basement	Sep 2016
7 pCi/L	Menomonee Falls, WI	24.0 mi	21-50 Years	Full Basement	Dec 2022
10 pCi/L	Fall River, WI	29.6 mi	51-99 Years	Full Basement	Mar 2020

Readings are drawn from the nearest cities with submitted data. Have a result for Ixonia? Submit your reading to help your neighbors.

Jefferson County Radon Profile

The bedrock and soils beneath Jefferson County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Jefferson County average 7.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Jefferson County.

Radon FAQ for Ixonia, WI

What EPA Radon Zone is Ixonia in?

Ixonia and the 53036 zip code are in Jefferson 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 Ixonia?

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

Radon mitigation in Ixonia 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 Ixonia?

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.

Radon Levels Near Ixonia, WI

User-submitted radon levels from the cities closest to Ixonia with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Watertown	8.8 mi	7.00 pCi/L	1
Pewaukee	16.6 mi	10.00 pCi/L	1
Juneau	16.7 mi	4.00 pCi/L	1
Waukesha	19.8 mi	5.50 pCi/L	2
Slinger	20.0 mi	20.00 pCi/L	1
Menomonee Falls	24.0 mi	6.50 pCi/L	2