Here is the number every Topeka homeowner should know: according to the Kansas Department of Health and Environment, the average residential radon test in Kansas comes back at 5.4 pCi/L — above the EPA action level of 4.0. Not the worst homes. The average. The Kansas Radon Program estimates about 1 in 4 Kansas homes has elevated radon, against a national estimate of 1 in 15.
Radon is invisible, odorless, and tasteless, and it varies house to house on the same block — so the only way to know your home’s number is to test. If it comes back high, mitigation is a solved problem: Kansas program data shows the average mitigated home drops from about 9 pCi/L to about 1.2.
We’re a local radon referral service. Call or send the form and we’ll connect you with a certified radon professional serving Shawnee County — Kansas law requires certification for radon work, and certified pros are who we refer. No charge to you for the referral.
Topeka’s soil is loaded twice. Northeast Kansas is the glaciated corner of the state — ice-age glaciers pushed into this region and left crushed, uranium-bearing rock behind, and pulverized rock releases radon far more readily than solid stone. Beneath and around those deposits, the Kansas Geological Survey notes that residual clay soils derived from Pennsylvanian and Permian limestone and phosphatic black shale carry above-average uranium of their own. Two separate geologic sources, one result: soil gas under Topeka foundations.
Our housing finishes the equation. Topeka is basement country — tornado-season shelter and cold-winter construction — and a basement puts your living space in direct contact with that soil. Homes with decades-old foundations near downtown and the Kansas River behave differently than post-war ranches or new construction toward southwest Shawnee County, but the KGS is blunt on the key point: radon cannot be predicted from the map. Every Kansas home has the potential, and only a test answers the question.
Radon testing — from a roughly $10 test kit at the Shawnee County Extension office to a certified professional measurement, which Kansas law requires for paid testing work.
Radon mitigation — a sealed pipe and continuous fan pulling radon from beneath your foundation and venting it above the roofline. Typically installed in a day, verified with a retest.
Radon and home sales — Kansas is one of the few states with a radon notice written into every residential sales contract by statute. If you’re buying or selling, that page is for you.
System repair — fans wear out and systems fail silently; a sixty-second gauge check tells you if yours is alive.
Most homes run $800–$2,500 installed, with a standard single-point system on an accessible basement usually landing between $1,000 and $1,500. Foundation type, suction points, and pipe routing move the price. Expect an itemized quote in writing — with the verification retest included — before any work starts.
The EPA attributes about 21,000 U.S. lung cancer deaths a year to radon — the second-leading cause of lung cancer overall and the leading cause among people who never smoked. Risk builds with exposure over years, which is exactly why a fixable problem shouldn’t be left to drift.
Yes. The Kansas Geological Survey is explicit that levels vary house to house — entry depends on your foundation’s specific cracks, joints, sump, and pressure. The only number that matters is yours.
Kansas program data answers this better than any sales pitch: the average mitigated home in Kansas goes from about 9 pCi/L to about 1.2 — well below the action level. A proper job ends with a retest that proves it in writing.
Kansas has a radon certification law (K.S.A. 48-16a01 and following): anyone performing radon measurement or mitigation for pay must be state-certified through KDHE. That’s who we refer — and it’s worth asking any bidder for their certification.
If you’ve never tested, now. Then every two years, after any foundation or HVAC work, after finishing a basement, and whenever a home changes hands. Winter tests read closest to your worst case, which is the number worth knowing.
We’re a local radon referral service. Call or send the form and we’ll connect you with a certified radon professional serving Shawnee County — Kansas law requires certification for radon work, and certified pros are who we refer. No charge to you for the referral.
Topeka Radon Mitigation — Connecting Topeka and Shawnee County homeowners with certified radon professionals.
Serving Topeka, North Topeka, Silver Lake, Rossville, Auburn, Wakarusa, Berryton, Tecumseh, and greater Shawnee County.
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Radon information on this site is general guidance, not a substitute for professional testing of your specific home. Topeka Radon Mitigation is a referral service and does not itself perform radon measurement or mitigation.