Radon Testing Requirements for Illinois Daycare Centers

When parents drop off their children at daycare, they expect a safe and healthy environment—one that goes beyond clean floors and age-appropriate toys. What many don’t realize is that something as invisible as radon gas can pose a serious health risk, especially to young children who are more vulnerable to environmental hazards. In Illinois, lawmakers have taken this threat seriously by requiring all licensed daycare facilities to test for radon on a regular basis. Whether you run a home daycare or a large childcare center, understanding these requirements isn’t just about compliance—it’s about protecting the health of every child who walks through your doors.

So, here are the requirements for radon testing in daycare facilities in Illinois:

Under Section 5.8 of the Child Care Act of 1969 (225 ILCS 10/5.8), Illinois requires radon testing in all licensed daycare settings. This includes daycare centers, daycare homes, and group daycare homes. Here’s what providers need to know:

Triennial Testing

Every licensed daycare must complete radon testing at least once every three years. This must follow the standards set by the Illinois Emergency Management Agency (IEMA).

Proof for Licensing and Renewal

Since January 1, 2014, providers have been required to show proof of testing from within the past three years. Without it, they cannot obtain or renew their daycare license.

Test Result Disclosure

The most recent radon test results must be posted next to the facility’s state-issued license. Parents can request to see the results at any time. Results must include a required health advisory.

Who Can Perform the Test?

• Center-based daycares must hire an IEMA-licensed radon measurement professional.

• Home daycares may use an approved do-it-yourself test kit.

Required Health Advisory

The posted results must include a notice that:

• Radon is a Class A carcinogen

• The EPA recommends action at 4.0 pCi/L or above

• Contact info for IEMA must be provided

What Happens If You Don’t Comply?

License May Be Denied

If your facility doesn’t provide valid radon testing proof, your application or renewal can be delayed or denied.

Regulatory Action

Failure to follow posting and testing rules can result in fines, investigations, or license suspension.

Legal Risk

Even though mitigation isn’t required, ignoring high radon levels could expose you to liability if children are harmed.

Reputation Damage

Parents expect transparency. Failing to meet safety rules can harm your reputation and reduce enrollment.

Bottom Line

Daycare centers in Illinois must test for radon every three years, share the results, and post them visibly. Failing to comply risks your license, legal exposure, and community trust.

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