Iowa has the highest residential radon levels in the United States. Over 70% of Iowa homes test above the EPA action level of 4.0 pCi/L, and Waukee sits squarely in EPA Zone 1 — the highest-risk designation in the country. A certified radon mitigation system can bring your home's reading well below the action level, often in a single day. Get connected with a licensed local mitigator for a free in-home estimate.
Waukee sits on glacial deposits over limestone bedrock — the same geology that gives the Des Moines metro one of the worst residential radon profiles in the country. As Waukee homes have grown larger and basements deeper over the past 20 years, more living space has come into contact with that radon-rich soil.
Radon is the second-leading cause of lung cancer in the United States after smoking, and the leading cause among non-smokers. It is colorless, odorless, and only a long-term test can detect it.
Pricing depends on your home's size, foundation type, and the design of your mitigation system. Published industry data for Iowa puts most residential mitigation projects in the following ranges:
Larger homes, walk-out basements, or multi-foundation systems generally cost more. Crawl-space encapsulation, when needed, is usually billed separately based on square footage.
See our full cost breakdown for Iowa →
West Des Moines residents: the city operates a radon mitigation grant program that may reimburse a portion of testing and mitigation costs. Eligibility and amounts change over time — see the city's official program page for current details. Waukee homes are not currently eligible.
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Every contractor's process is a little different, but a typical residential sub-slab depressurization install follows these general steps:
We cover Waukee and the western Des Moines metro:
The only way to know is to test. The EPA recommends a long-term test (90+ days) for the most accurate reading, or a short-term professional test (2–7 days) for faster results. If the average reading is at or above 4.0 pCi/L, the EPA recommends mitigation. Test kits are available at most hardware stores, or a licensed mitigator can run one for you. Learn more about reading your test results →
Yes. A properly designed sub-slab depressurization system reliably reduces indoor radon levels — most installs achieve well below the 4.0 pCi/L action level. Reputable mitigators include a post-mitigation test to confirm the new level. If a system doesn't bring levels down enough, the contractor typically returns to adjust the design at no additional charge.
PVC vent piping is essentially permanent. The fan is the wear part — most fans are rated for around 10 years of continuous operation. Maintenance is minimal: glance at the system's manometer (the small U-shaped fluid indicator) every few months to confirm the fan is still pulling vacuum.
Iowa law requires anyone installing mitigation systems for compensation to be a state-licensed contractor. Homeowners can technically install on their own homes, but it's generally not recommended — vent location, fan sizing, and slab sealing all matter, and a poorly designed system can actually make radon levels worse. The cost of professional installation is usually small relative to the value of getting it right.
Real-estate transactions are a major source of mitigation work in Iowa. Most local mitigators can estimate within a day or two and install within 1–2 weeks, including the post-mitigation test the buyer's agent will want to see. Learn more about radon and Iowa home sales →
West Des Moines operates a city-level radon mitigation grant program; eligibility and amounts change, so check the city's official page for current details. Iowa has periodically considered a state-level radon mitigation tax credit — ask your mitigator about the current status. Federal tax credits do not currently apply to radon mitigation.
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