Florence
Boone County's fast-growing hub, full of newer subdivision homes on full basements over Zone 2 soil.
Radon in Florence →Boone, Kenton & Campbell Counties
Radon Mitigation in Northern Kentucky
Northern Kentucky sits directly across the Ohio River from Cincinnati, and it carries the same radon problem the north bank does. Boone, Kenton, and Campbell counties are all mapped by the EPA as Radon Zone 2, with a predicted average of 2–4 pCi/L. Zone 2 is a prediction, not a promise of safety — real-world Northern Kentucky test results frequently exceed the 4.0 pCi/L action level, so every home should be tested regardless of zone.
Ohio Valley Radon Mitigation is a referral service, not a contractor. We match you with a certified radon professional who works your side of the river, then step out of the way. The certified pro gives you the quote and does the work on your home.
Zone 2 across the river
Why the whole NKY region reads high
Radon is a radioactive gas that rises out of the soil and bedrock and collects in the lowest level of your home. The Ohio River valley geology that drives high readings in Cincinnati doesn't stop at the water — it runs straight under the Kentucky side.
Fractured limestone and the glacial deposits along the river hold uranium's decay products and release radon steadily. It enters through slab cracks, sump pits, and the cold joint where a basement floor meets the wall, then builds up in finished lower levels.
That's why all three Northern Kentucky counties carry the Zone 2 label — a predicted 2–4 pCi/L average drawn from soil surveys, bedrock, and years of test data. But a zone map is only a prediction of the county average, not a verdict on your house: real-world NKY readings frequently exceed 4.0 pCi/L, and homes in the same zone can test far apart. The only way to learn your home's number is a test. See how testing works.
2
EPA Radon Zone — All of NKY
4.0
pCi/L — EPA Action Level
At or above 4.0 pCi/L, the EPA recommends fixing your home. A good system usually brings a home below 2.0. See how a system works.
County by county
The three Northern Kentucky counties
Different housing, one geology. Each county below is EPA Radon Zone 2 (predicted 2–4 pCi/L), and each has its own mix of older river-town homes and newer suburban builds — with plenty of individual homes that test above 4.0.
| County | EPA Zone | Local note |
|---|---|---|
| Boone | 2 | The fastest-growing NKY county — Florence and the newer subdivisions add many full-basement homes over Zone 2 soil. |
| Kenton | 2 | Spans dense, older river-town housing in the Covington area and the growing Independence suburbs to the south. |
| Campbell | 2 | Older Newport-area housing along the river sits close to the fractured bedrock that produces radon. |
Kentucky vs. Ohio rules
How radon credentials differ across the river
This is the point that trips up a lot of Northern Kentucky homeowners. Ohio and Kentucky handle radon professionals differently, and knowing the difference protects you.
In Ohio, radon work is regulated by the Ohio Department of Health (ODH), and contractors are required to hold a state license to test or mitigate. It's mandatory — no license, no legal work.
Kentucky is different. The state recommends that homeowners hire radon professionals certified through the national programs — NRPP (National Radon Proficiency Program) or NRSB (National Radon Safety Board) — but it does not require a state-issued license the way Ohio's ODH program does. Certification is strongly advised, not legally mandated.
That gap is easy to get wrong, so we keep it simple: on the Kentucky side we match you with an NRPP- or NRSB-certified pro, the same national credential Ohio's licensed contractors carry. You get a vetted, certified professional whichever bank of the river your home sits on.
Both sides of the river
The Kentucky side is often underserved
Plenty of radon companies market themselves as Cincinnati outfits and quietly stay on the Ohio bank. When a Boone or Kenton County homeowner calls, the answer is often a long drive, a delay, or a no.
That's the gap we set out to fill. We cover both sides of the river on purpose, so a homeowner in Florence or Covington gets the same fast match a homeowner in Mason does.
Whether your home is a century-old river house in the Covington area or a new build in a Florence subdivision, we connect you with a certified pro who actually works Northern Kentucky. See the full service area.
How the referral works
Three steps, no cost to you
We connect Northern Kentucky homeowners with a vetted, certified radon professional who covers their county. Here's the whole process.
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Tell us about your home
Your NKY county or zip code, foundation type, and whether you've tested. Two minutes by form or one phone call.
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We match you locally
We connect you with an independent, NRPP- or NRSB-certified radon pro who works Boone, Kenton, or Campbell County.
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The pro handles it
You get a free quote directly from that certified professional. All testing and mitigation is performed by them — never by us.
Northern Kentucky communities
Pick your NKY city for local radon detail
Same referral, same Zone 2 geology, local context for each community. Start with your town.
Independence
One of Kenton County's fastest-growing suburbs, with a lot of newer family housing worth testing.
Radon in Independence →Covington
Dense, older river-town housing right along the Ohio, close to the bedrock that produces radon.
Radon in Covington →Northern Kentucky questions
Radon questions from NKY homeowners
No. Unlike Ohio — where the ODH program makes a state license mandatory — Kentucky recommends that homeowners use radon professionals certified through the national NRPP or NRSB programs, but does not require a state license. We match you with an NRPP- or NRSB-certified pro so you get that national credential either way.
Yes. Boone, Kenton, and Campbell counties are all EPA Radon Zone 2, with a predicted 2–4 pCi/L average. Zone 2 is only a prediction, though — real-world NKY test results frequently exceed the 4.0 pCi/L action level, because the same Ohio River valley geology that drives high readings in Cincinnati runs right under Northern Kentucky. Every home should be tested regardless of zone.
We do — that's the point. Many Cincinnati companies stay on the Ohio bank, so we made a point of covering both. A homeowner in Florence or Covington gets the same fast match as one in Ohio.
Most homes in the region land between $800 and $2,200 for a complete system, depending on foundation type and layout. Our cost guide breaks it down line by line.
No. We're a referral service. We match you with an independent, certified radon professional who covers your NKY county, and that pro performs all testing and mitigation.
Free, no obligation
Get matched with a certified radon pro in Northern Kentucky
Tell us about your home and we'll connect you with a certified contractor in Boone, Kenton, or Campbell County for a free quote. No cost to you — we're paid by the contractor network, not by homeowners.