Dearborn County, Indiana · EPA Radon Zone 1
Radon Mitigation in Dearborn County, Indiana
Dearborn County sits in EPA Radon Zone 1, the category the federal map reserves for areas with the highest predicted indoor radon levels — a countywide average expected to run above 4.0 pCi/L. Indiana follows the same EPA radon zones as its neighbors, and Zone 1 covers all of Dearborn: Lawrenceburg, Aurora, Greendale, and the ridgetop communities in between.
Radon has no color, no smell, and no taste, so a Zone 1 address gives you no warning on its own. A test is the only way to learn your home's number, and if it comes back high, a mitigation system brings it back down.
Ohio Valley Radon Mitigation is a referral service, and this is one of the few referral services that covers the Indiana side of the tri-state market. We don't test or install anything ourselves — we match you with an independent, NRPP-certified radon contractor who works Dearborn County, and that contractor handles the work and the quote.
Indiana radon rules
Why we point Indiana homeowners toward NRPP certification
Indiana handles radon differently than Ohio. The Indiana State Department of Health recommends that every Indiana home be tested, and it treats radon as a statewide health concern — but unlike Ohio's ODH program, Indiana has no mandatory radon contractor license.
That gap matters when you're hiring. Without a state license to check, the clearest credential to look for is certification through the National Radon Proficiency Program (NRPP), which trains and tests professionals on measurement and mitigation standards. Every contractor we match you with in Dearborn County holds that NRPP certification.
So the process is the same as testing anywhere else, but the vetting is the reason to use a referral. We confirm certification before we ever connect you, which spares you from sorting credentials on your own. You can read more at the Indiana State Department of Health's radon program at in.gov/health.
Local geology
The tri-state corner, west of Cincinnati across the river
Dearborn County sits at the Indiana-Ohio-Kentucky tri-state corner, directly west of Cincinnati across the Ohio River. That location puts it on the same river-valley ground that gives the whole region its radon problem — glacial deposits and fractured bedrock that hold uranium's decay products and release radon up into homes.
The Ohio River corridor here, running through Lawrenceburg, Aurora, and Rising Sun just downstream, is exactly the terrain that earns a Zone 1 rating. River-valley geology is some of the most radon-prone ground anywhere in the tri-state, and it doesn't stop at the state line — Hamilton County, Ohio, sits just across the water in the same zone.
A zone is a prediction about the earth, not a reading from your basement, and two homes on the same road can test very differently. That is why testing is the starting point rather than the zone map. See how radon testing works or read the county-by-county radon data for the wider area.
Dearborn County housing
Lawrenceburg, Aurora, Greendale, and older river-town homes
Lawrenceburg, a river town of roughly 5,000, is the county seat, and Aurora and Greendale are the other primary communities. The Ohio River corridor here carries older housing stock, and homes built generations ago tend to give radon the most ways in — stone foundations, unsealed block walls, and dirt-floor crawl spaces open to the soil.
The local economy keeps the housing market active. Hollywood Casino Lawrenceburg and the Belterra Park-area gaming employment support a steady base of workers who own homes across the county, from the river towns up onto the ridges. An active market means an active flow of inspections, sales, and renovations — all moments when radon comes up.
When a home tests high, a mitigation system vents the gas safely above the roofline, and the cost guide lays out what to expect. Older river-town houses and newer ridge subdivisions alike can carry elevated levels, so the number always comes from the test rather than the age or style of the house.
How the referral works
Getting matched in Dearborn County
We're the step before the contractor. Here's the whole process — and where the NRPP-certified pro takes over.
-
Tell us about your home
Your Dearborn County zip, foundation type, and whether you've tested. Two minutes by form or a quick phone call.
-
We match you locally
We connect you with an NRPP-certified radon contractor who covers Lawrenceburg, Aurora, Greendale, and the rest of Dearborn County.
-
The contractor handles it
You get a free quote directly from that certified contractor. All testing and mitigation is performed by them — never by us.
Dearborn County radon questions
What Dearborn County homeowners ask
Yes. Dearborn County is EPA Radon Zone 1 — the highest potential category, with predicted indoor averages above 4.0 pCi/L. The Ohio River valley geology makes testing the sensible first step for any home in the county.
No. Indiana has no mandatory radon contractor license, so the credential to look for is NRPP certification. Every contractor we match you with in Dearborn County holds it. The Indiana State Department of Health recommends testing all homes.
Yes. This is one of the few referral services that reaches the Indiana side of the market, covering Lawrenceburg, Aurora, Greendale, and the rest of Dearborn County alongside the Ohio and Kentucky communities.
Especially those. Stone foundations, block walls, and dirt crawl spaces give radon extra ways in, and many older river-town homes have exactly those features. A test is the only way to know the number.
Free, no obligation
Get matched with an NRPP-certified Dearborn County radon contractor
Tell us about your home and we'll connect you with an NRPP-certified contractor covering Lawrenceburg, Aurora, Greendale, and the rest of Dearborn County for a free quote. No cost to you — we're paid by the contractor network, not by homeowners.