Radon levels in Polk County, Nebraska
HighEPA Zone 1Predicted long-term basement average of 5.3 pCi/L (model estimate) across 5 ZIP codes - about 2.9× the US average of 1.8, about 1.5× the Nebraska average of 3.6. Ranked #5 of 93 Nebraska counties.
Test Polk County, NE now - and consider a continuous monitor
The model predicts a long-term basement average of 5.3 pCi/L here, at or above the EPA action level of 4. Homes in the same ZIP still vary widely, so a real test is the only way to know your number. A continuous digital monitor shows how your level swings with weather and season, which matters when you're near the action level.
Already tested at 4 pCi/L or higher? Find a certified mitigation professional (EPA). A mitigation system typically runs $800-$2,500 installed.
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Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.
5.3 ± 0.05
pCi/L predicted basement mean (model SD)
2.8 ± 0.07
pCi/L predicted upstairs (above-ground) mean
5.0-5.5
range of ZIP-level basement predictions in the county
What this means for Polk
The typical home in Polk County is predicted to sit at or above the EPA action level of 4 pCi/L in the basement. In practice that means a large share of houses here would qualify for mitigation if tested, and buyers routinely ask for radon tests in Nebraska transactions.
The 1993 EPA zone (1) and the 2001-2021 model agree for Polk. County figures weight each ZIP by its 2010 Census population, so they describe where people live rather than empty land.
Comparable Nebraska counties: Butler County (5.3), Wayne County (5.4), York County (5.2), Nemaha County (5.2). The state's highest is Burt County at 5.7 pCi/L.
ZIP codes in Polk County
Predicted basement and upstairs means by ZIP (model estimate). ZIPs whose land is mostly in this county.
If your test comes back at 4 pCi/L or higher
Mitigation is a routine job: a fan-driven pipe that vents soil gas from under the slab to above the roofline, typically $800-$2,500 installed (typical range; local quotes vary). Use certified professionals: EPA find-a-professional. Read the full mitigation guide.
Polk County radon questions
- Is radon high in Polk County, Nebraska?
- High. The model predicts a long-term basement average of 5.3 pCi/L in Polk County (about 2.9× the US average of 1.8 and about 1.5× the Nebraska average of 3.6). That is at or above the EPA action level of 4 pCi/L, so the typical home here would qualify for mitigation. Ranked 5 of 93 Nebraska counties.
- Should I test for radon in Polk County?
- Yes, soon. With a predicted average of 5.3 pCi/L and at least one ZIP predicted at 5.5, many homes in Polk County will test above the 4 pCi/L action level. Use a short-term kit first; if it reads 2 or higher, confirm with a long-term test or continuous monitor before deciding on mitigation.
- What does EPA Radon Zone 1 mean for Polk County?
- Zone 1 - highest potential (predicted average > 4 pCi/L). The zone map dates from 1993 and classifies whole counties. The 2001-2021 model agrees with the zone here. Neither replaces a test of your own home.
- How much does radon mitigation cost in Polk County?
- A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Nebraska quotes vary with foundation type (slab, crawlspace, basement), home size and local labor. Get two or three bids from certified mitigators listed by your state radon program or the EPA's find-a-professional page.
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