Big Rock, IL Radon Levels

Q: What EPA Radon Zone is Big Rock in?

Big Rock is in Kane County, EPA Zone 1.

Q: How much does radon mitigation cost in Big Rock?

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

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

Big Rock, IL Radon Facts

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

County Kane County, IL

Zip Code 60511

This Kane County community lies within the Chicago Metro's glaciated terrain, where Wisconsin-age till deposits over limestone bedrock create high radon potential throughout zip code 60511. Although specific testing data isn't available for Big Rock, the northwest suburban area's geological conditions and typical full-basement construction create ideal circumstances for radon accumulation. Given Illinois's statewide radon concerns and the prevalence of basements in local housing, residents should prioritize professional radon testing and potential mitigation.

9.33

pCi/L area average

Above EPA Action Level

Kane County average: 9.33 pCi/L, based on 12 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Big Rock 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+

Big Rock, 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 Big Rock, IL

No homeowner tests have been submitted for Big Rock 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
Sugar Grove	5.1 mi	7.00 pCi/L	1
Plano	6.4 mi	10.00 pCi/L	1
Yorkville	9.6 mi	6.00 pCi/L	2
Montgomery	11.0 mi	8.50 pCi/L	2
North Aurora	11.4 mi	7.00 pCi/L	2
Aurora	13.2 mi	6.75 pCi/L	4
Cortland	13.6 mi	5.00 pCi/L	1
Geneva	14.6 mi	7.00 pCi/L	2

Kane County Radon Profile

The bedrock and soils beneath Kane 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 8 cities in Kane County average 9.33 pCi/L across 12 tests — 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 Kane County.

Radon FAQ for Big Rock, IL

What EPA Radon Zone is Big Rock in?

Big Rock and the 60511 zip code are in Kane 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 Big Rock?

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

Radon mitigation in Big Rock 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 Big Rock?

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.