IL · Will County

Radon Test Kits in Joliet, IL

If you are a Will County homeowner, you can buy the county's $8 passive radon kit at the Joliet main office, 501 Ella Ave. The office phone on the county page is 815-727-8490, and the listed hours are Monday to Friday, 8:00 a.m. to 4:30 p.m.

Last verified October 1, 2026. Confirm the official page before you travel. Prices and stock change.

Local option

Available when checkedLow-cost test kit

Will County Health Department radon kits

Passive radon test kits are $8 at the Joliet, Bolingbrook, and Monee health department offices.

Who it is for. The department offers kits to homeowners in Will County, Illinois.

$8 at every health department office. The kit includes simple directions, prepaid postage to the lab, laboratory analysis, and a written report.

Buy the kit in person at the Joliet, Bolingbrook, or Monee office.

Joliet main office

This is the Joliet office.

501 Ella Ave.
Joliet, IL 60433

Hours: Monday to Friday, 8:00 a.m. to 4:30 p.m.

Phone: 815-727-8490

Bolingbrook northern branch

323 Quadrangle Dr., Ste. 335
Bolingbrook, IL 60440

Hours: Monday to Friday, 8:00 a.m. to 4:00 p.m.

Phone: 630-679-7030

Monee eastern branch

5601 W. Monee-Manhattan Rd., Ste. 110
Monee, IL 60449

Hours: Monday to Friday, 8:00 a.m. to 4:00 p.m.

Phone: 708-534-5721

The county page says the kits are available at every health department office and names those three cities. Call the office before you go if you need to confirm stock.

Last verified October 1, 2026Radon Program | Will County Health Department See something outdated? Report a change.

Prefer a reusable electronic radon monitor?

A short-term test kit is a good low-cost way to screen a home. If you want to see how radon changes over days, weeks, and seasons, or you want a monitor you can reuse in another home, an electronic radon monitor may be a better fit.

Bill's current pick from the Minneapolis guide: Airthings View Radon. It is the simpler radon display. View Plus is the one to compare if you also want a wider indoor air picture.

See current Airthings price Compare radon monitors

If you purchase through our Airthings link, we receive a small percentage of the sale at no additional cost to you. Our affiliate link may provide a discount on eligible products. This helps support the local radon-testing directory.

The product link does not apply a discount by itself. Bill's Minneapolis guide says to add the monitor to your cart, enter your name and shipping, then type ARS10 at checkout. That guide says the code is 10% off eligible Airthings products, it does not apply to items that are already discounted, and it does not stack with other offers. Code: ARS10.

EPA radon zone

EPA classifies Will County as Zone 2, its moderate radon-potential category. Individual homes can vary, so testing is still the only way to know your home's level. The zone is not a claim that your house is high.

Local radon notes

EPA classifies Will County as Zone 2, its moderate radon-potential category. Individual homes can vary, so testing is still the only way to know your home's level.

Source: EPA Map of Radon Zones (county file https://www.epa.gov/system/files/other-files/2024-06/radon-zones-202406.json). Checked October 1, 2026.

How to test, and what a result means

Place the kit the way its instructions say, and keep the house closed when the kit requires that. A short test is a screen. It is not the last word if your state wants a follow-up test.

How to test for radon
Understanding radon results
What 4 pCi/L means

Sources

Radon Program | Will County Health Department. Verified October 1, 2026.
EPA Map of Radon Zones (county file https://www.epa.gov/system/files/other-files/2024-06/radon-zones-202406.json)

How we check programs

A reusable monitor does not have to stay in one house. After you have a reading you trust for your own home, you can lend it to a parent, an adult child, a coworker, a neighbor, or a friend.

Here is an example, not a sale price. If a roughly $100 monitor is eventually used by five households, the equipment cost works out to about $20 per household. Your real price will be whatever the maker charges that day.

Lending a monitor this way does not meet a professional test or a real estate requirement. When you move the device, follow the manufacturer's instructions and start a new measurement.