Radon mitigation in the Cedar Rapids and Iowa City area usually starts with a test result at or above 4 pCi/L, the level where EPA says to fix your home [1]. This site explains what that number means, how a system lowers it, what Iowa requires, and what the work tends to cost. When you're ready, you can ask for a quote.
Why testing matters in eastern Iowa
Iowa HHS says that, according to EPA, the whole state is at high risk for radon in homes [2]. Its own resources page adds that the Iowa Radon Survey found the largest share of homes above 4 pCi/L of any state, 71.6% [3]. A 2020 state fact sheet puts the average indoor level in Iowa at 8.5 pCi/L, against 1.3 nationally, and warns that two homes next door to each other can test very differently [4]. So a neighbor's result can't stand in for yours.
You can start with a kit. Iowa HHS lists free kits through two programs, one per household while supplies last, and sells low-cost kits through its hotline at 1-800-383-5992 [2]. See radon test kits and radon testing.
How a system brings levels down
EPA calls active subslab suction the most common and usually the most reliable method: a pipe through the floor and a fan pull soil gas from under the house and vent it outside [5]. Homes with a crawl space usually get a sealed plastic sheet over the dirt with suction under it [5]. EPA says some systems cut radon by up to 99% [5]. Read more on radon mitigation, the parts of a radon mitigation system and crawl space radon.
Finding radon mitigation near me
Iowa law says a person who isn't credentialed by the state can't do radon abatement for pay, with exceptions for your own building and unpaid work [6]. Iowa HHS publishes a list of credentialed mitigation specialists, generated September 24, 2026 [7]. Lists change, so check the current one on the Iowa HHS radon page before you sign [2]. The full set of state rules is on how it works.
When you compare radon mitigation contractors, EPA suggests asking whether the price covers a warning device and a test after installation, and what reduction they will guarantee [5]. Credentialed companies also have to follow set standards: since July 1, 2026, Iowa's rule requires credentialed specialists to follow the ANSI/AARST mitigation standards [8].
What it costs
National 2026 guides put a typical system at about $805 to $1,326 (Angi) or $1,200 to $2,000 (HomeGuide) [9, 10]. No source we found publishes a Cedar Rapids or Iowa City average. The radon mitigation cost page breaks the numbers down.
Towns covered
Cedar Rapids, Iowa City, Marion, Coralville, North Liberty, Hiawatha, Tiffin, Mount Vernon, Robins, Solon, Fairfax, Oxford, Center Point, West Branch, Kalona, Ely, Lisbon, Atkins, Palo, University Heights, Swisher, Hills, Shueyville and Washington. Two cities have their own radon rules: Cedar Rapids' building code rules and Iowa City's rental radon rule. See service areas for every town.
Get a quote
Request a quote and include your latest test result if you have one.
We're a referral service, not a contractor. We send mitigation requests only to contractors on Iowa HHS's current credentialed list and testing requests only to state-certified radon measurement specialists, but we don't otherwise vet them, a referral is not an endorsement, and independent contractors may pay us for referrals.
Sources
- U.S. EPA, A Citizen's Guide to Radon, EPA 402/K-12/002 (2025 edition, PDF). https://www.epa.gov/sites/default/files/2016-12/documents/2016_a_citizens_guide_to_radon.pdf
- Iowa HHS, Radon program page (fetched Nov 11, 2026). https://hhs.iowa.gov/health-prevention/providers-professionals/radiological-health/radon
- Iowa HHS, Radon Resources (fetched Nov 11, 2026). https://hhs.iowa.gov/health-prevention/providers-professionals/radiological-health/radon/radon-resources
- Iowa HHS (as IDPH), Iowa Radon Home Buyers and Seller Fact Sheet, dated 2/2020 (PDF). https://hhs.iowa.gov/media/7917/download?inline
- U.S. EPA, Consumer's Guide to Radon Reduction, EPA 402/K-10/005 (2025 edition, PDF). https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf
- Iowa Code chapter 136B, Radon Control (2026). https://www.legis.iowa.gov/docs/code/136B.pdf
- Iowa HHS, Iowa Credentialed Radon Mitigation Specialists list (PDF, report generated 9/24/2026). https://hhs.iowa.gov/media/7883/download?inline
- Iowa Administrative Code 641, Chapter 44, Radon Mitigation (ARC 0290D, IAB 5/13/26, effective 7/1/26). https://www.legis.iowa.gov/docs/iac/chapter/641.44.pdf
- Angi, "How Much Does a Radon Mitigation System Cost? [2026 Data]," Mitchell Grant, updated Sep 28, 2026. https://www.angi.com/articles/how-much-does-it-cost-remove-radon-gas.htm
- HomeGuide, "How Much Does a Radon Mitigation System Cost? (2026)," Kristen Cramer, Feb 5, 2026. https://homeguide.com/costs/radon-mitigation-cost