IL
Radon Test Kits in McHenry County, IL
McHenry County sells a short-term radon kit for $8 at 667 Ware Rd, Suite 110, in Woodstock. The price includes the mailer and postage. Phone 815-334-4585.
Checked October 1, 2026. Confirm before you go.
Where to get a kit
McHenry County radon test kits: $8
McHenry County sells 4 to 7 day radon kits for $8, mailer and postage included, at its Woodstock office.
Pick up in person (call first):
- Division of Environmental Health, 667 Ware Rd Suite 110 (Administration Building), 815-334-4585
- Who can get it
- McHenry County, Illinois residents.
- Lab and return postage
- Not stated
Prefer a reusable radon monitor?
A monitor keeps measuring over time. EPA: "Because radon levels tend to vary from day to day and season to season, a short-term test is less likely than a long-term test to tell you your year-round average radon level."1 EPA also notes that heating and air conditioning changes, and the weather, can affect readings.2
Corentium Home 2: $179.99
Price checked October 1, 2026
Check price at AirthingsCompare Airthings monitors
Enter ARS10-10OFF at checkout for 10% off eligible items.
The small commission from purchases made through this link helps keep this free public directory open, at no extra cost to you.
- EPA, A Citizen's Guide to Radon (PDF), page 5
- EPA, Home Buyer's and Seller's Guide to Radon (PDF)