Test for radon.
Iowa is Zone 1.
IARadonMitigation connects Iowa homeowners with IDPH-licensed radon measurement specialists and mitigation contractors for scheduled testing, active soil depressurization (ASD) systems, and real-estate-transfer disclosure testing. Every Iowa county is in EPA Radon Zone 1 (highest predicted risk), and more than 70% of tested Iowa homes exceed the 4 pCi/L EPA action level. We're a referral directory — we don't perform testing or mitigation ourselves.
(800) 555-0559Des Moines · Cedar Rapids · Quad Cities · Iowa City · all 99 Iowa counties
Iowa: the only state where 100% of counties are EPA Radon Zone 1
Iowa sits on glaciated limestone and shale that releases uranium-decay radon at concentrations unmatched anywhere else in the United States. All 99 Iowa counties fall in EPA Radon Zone 1 — the highest predicted-risk tier — and the Iowa Cancer Registry has documented radon-attributable lung cancer as the leading environmental carcinogen in the state, second only to smoking as a cause of lung cancer overall. The EPA action level is 4 pCi/L; statewide testing programs show more than 70% of Iowa homes exceed it, and many basement homes test at 10-20 pCi/L. The fix — active soil depressurization (ASD) — is a one-time installation by an IDPH-licensed mitigation contractor that pulls radon out from beneath the slab and vents it above the roofline. Real-estate transfers in Iowa increasingly require testing and disclosure.
How an Iowa radon project runs
- 1
Initial measurement test (48-96 hours)
An IDPH-licensed measurement specialist deploys a continuous radon monitor (CRM) or charcoal canister in the lowest livable level under closed-house conditions. Results returned in 48-96 hours with a written report suitable for real-estate disclosure.
- 2
Mitigation diagnostic and proposal
If results exceed 4 pCi/L, an IDPH-licensed mitigation contractor scopes the foundation (basement, crawlspace, slab-on-grade), identifies the best ASD suction point, and writes a fixed-price proposal — typically $1,200 to $2,500 for a single-family Iowa home.
- 3
ASD installation (1 day)
The contractor cores the slab, installs PVC piping from the sub-slab to above the roofline, mounts a continuously-running radon fan, seals foundation cracks and sump covers, and adds the required system label and U-tube manometer per EPA and IDPH standards.
- 4
Post-mitigation verification test
24-hours-plus after system commissioning, a second 48-96-hour test verifies that indoor radon is below 4 pCi/L (most ASD systems achieve under 2 pCi/L). You receive system documentation, the post-test report, and a written warranty for the file and for any future home sale.
Browse by city
10 Iowa cities — Des Moines, Cedar Rapids, the Quad Cities, Iowa City, Sioux City, Council Bluffs, Dubuque, and more.
Ready to test for radon?
Testing is short, scheduled, and inexpensive. Mitigation is a one-time investment that lasts decades — and Iowa's geology is the reason it matters.
(800) 555-0559