Elwood, IL Radon Levels

Q: What EPA Radon Zone is Elwood in?

Elwood is in Will County, EPA Zone 2.

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

No homeowner radon tests have been submitted for Elwood yet, so readings from the closest cities and the Will 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 Elwood?

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

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

Elwood, IL Radon Facts

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

County Will County, IL

Zip Code 60421

Positioned in Will County within the Chicago Metro area's southern suburban belt, Elwood sits on glacial till deposits that create favorable conditions for radon gas production and migration. The region's dense clay soils over limestone bedrock contribute to variable radon levels throughout zip code 60421, though specific local testing data remains limited. Homeowners in this growing suburban community should test their properties, particularly those with the full basements standard in Chicago-area construction.

8.00

pCi/L area average

Above EPA Action Level

Will County average: 8.00 pCi/L, based on 30 user-submitted tests across 16 cities in the county. No homeowner readings have been submitted for Elwood 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+

Elwood, IL 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 Elwood, IL

No homeowner tests have been submitted for Elwood 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
Manhattan	5.7 mi	8.00 pCi/L	1
Joliet	5.9 mi	6.67 pCi/L	3
New Lenox	8.5 mi	10.14 pCi/L	7
Shorewood	8.8 mi	4.00 pCi/L	1
Crest Hill	8.9 mi	6.00 pCi/L	1
Minooka	10.3 mi	11.00 pCi/L	1
Lockport	11.7 mi	12.50 pCi/L	2
Mokena	12.6 mi	5.67 pCi/L	3

Will County Radon Profile

EPA mapping assigns Will 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 16 cities in Will County average 8.00 pCi/L across 30 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 Will County home regardless of zone or a neighbor's results.

Radon FAQ for Elwood, IL

What EPA Radon Zone is Elwood in?

Elwood and the 60421 zip code are in Will 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 Elwood?

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

Radon mitigation in Elwood 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 Elwood?

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.