Delaware County is rated EPA Zone 1, the agency’s highest radon potential category. In practice, that means roughly 1 in 3 homes here tests above the 4 pCi/L action level the EPA uses to recommend fixing a home.
That’s not a scare number, it’s just what the geology under Muncie looks like. Radon is a naturally occurring gas that comes up through soil and rock, and it doesn’t care how old or new a home is, or whether it has a basement or a slab.
Why This Matters More in Muncie Than in Lower-Risk Areas
Indiana has 57 of its 92 counties rated Zone 1, and Delaware County is one of them. Radon levels vary block to block and even house to house, since they depend on local soil composition and how a specific foundation is built, so a neighbor’s clean test doesn’t tell you anything about your own home. The only way to know is to test.
What Radon Testing Actually Involves
We run a 48-hour test using a sealed monitoring device placed in the lowest livable level of the home. It’s a passive process, nothing gets disturbed, and at the end of the window we have a clear reading of the radon concentration in picocuries per liter (pCi/L).
What Happens If a Test Comes Back High
If a test comes back at or above 4 pCi/L, the fix is a radon mitigation system, typically a vent pipe and in-line fan that pulls radon gas out from under the foundation and safely vents it above the roofline before it can build up indoors. Mitigation systems are effective and common, they’re just something to budget for and plan around if a test comes back elevated. We handle radon mitigations directly. Since every property is different, mitigation is quoted with a call or text rather than a flat price.
For Buyers and Sellers
If you’re buying in Muncie, radon testing is worth adding alongside a standard home inspection, especially given the county’s Zone 1 rating. If you’re selling, testing ahead of listing means you already know where you stand instead of finding out during a buyer’s inspection period.
A Note on Service Area
Radon testing and radon mitigation are currently offered in Indiana only.
Frequently Asked Questions
What does Delaware County’s EPA Zone 1 rating actually mean?
Zone 1 is the EPA’s highest radon potential category, meaning predicted average indoor radon levels exceed the 4 pCi/L action level. Roughly 1 in 3 homes in Zone 1 counties test above that level.
Yes. Radon comes from the ground, not from a home’s age or construction era, so new construction and older homes are both at risk depending on the specific site’s geology.
Our standard test runs 48 hours using a sealed monitoring device placed in the lowest livable level of the home.
A radon mitigation system, typically a vent pipe and fan that safely vents radon gas from under the foundation, brings levels down. We handle mitigations directly and quote them by call or text since every property is different.
Yes, most buyers schedule both together, though radon testing is also available on its own.
Conclusion
Delaware County’s Zone 1 rating makes radon testing a genuinely useful step for Muncie buyers and sellers, not just an upsell. Certified Home Inspection LLC provides radon testing and mitigation for Muncie and the surrounding area, alongside our full home inspection services in Muncie.
Ready to schedule? Book online or call us at 765-965-7793.