Wonder Lake, IL Radon Levels

Q: What EPA Radon Zone is Wonder Lake in?

Wonder Lake is in McHenry County, EPA Zone 2.

Q: How much does radon mitigation cost in Wonder Lake?

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

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

Wonder Lake, IL Radon Facts

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

County McHenry County, IL

Zip Code 60097

Located in McHenry County within the Chicago Metro's northwest suburban corridor, Wonder Lake sits on glacial till deposits from the Wisconsin glaciation that create soil conditions highly favorable for radon gas production. The community features predominantly single-family homes built between the 1950s and 1990s, most with full poured-concrete or block basements where radon accumulates most readily. While testing data for Wonder Lake is limited, the glacial geology and Zone 2 EPA classification make professional radon testing strongly recommended for all residents.

7.73

pCi/L area average

Above EPA Action Level

McHenry County average: 7.73 pCi/L, based on 33 user-submitted tests across 11 cities in the county. No homeowner readings have been submitted for Wonder Lake 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+

Wonder Lake, IL 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 Wonder Lake?

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

1-800-299-3578 847-213-9067 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Wonder Lake, IL

No homeowner tests have been submitted for Wonder Lake 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
Mchenry	5.5 mi	11.00 pCi/L	4
Woodstock	6.6 mi	12.50 pCi/L	2
Spring Grove	7.7 mi	14.00 pCi/L	1
Crystal Lake	9.5 mi	7.25 pCi/L	8
Fox Lake	9.6 mi	5.00 pCi/L	1
Cary	12.7 mi	6.00 pCi/L	3
Harvard	13.1 mi	8.00 pCi/L	2
Antioch	13.2 mi	7.00 pCi/L	4

McHenry County Radon Profile

EPA mapping assigns McHenry 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 11 cities in McHenry County average 7.73 pCi/L across 33 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 McHenry County home regardless of zone or a neighbor's results.

Radon FAQ for Wonder Lake, IL

What EPA Radon Zone is Wonder Lake in?

Wonder Lake and the 60097 zip code are in McHenry 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 Wonder Lake?

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

Radon mitigation in Wonder Lake 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 Wonder Lake?

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.