Is radon high in ZIP 66942?

High. The model's predicted long-term basement average for ZIP 66942 is 4.0 pCi/L (SD 0.06), with above-ground floors at 2.3 pCi/L. That is about 1.8× the average US ZIP code (2.2) and about 15% below the Jewell County average of 4.7. It ranks 6 of 8 ZIPs in the county.

Do I need to test my home in 66942?

Yes, now. A predicted average at or above the EPA action level of 4 pCi/L means most homes in 66942 would qualify for mitigation. Use a short-term charcoal kit or a continuous monitor; if the result is 4 or higher, get bids for a mitigation system (typically $800-$2,500).

What EPA radon zone is ZIP 66942 in?

ZIP 66942 lies mostly in Jewell County, which the EPA classifies as Radon Zone 1 (highest potential (predicted average > 4 pCi/L)). Zones are county-wide and date from 1993; the ZIP-level prediction above is from a 2001-2021 model built on millions of tests.

Radon levels in ZIP 66942

HighEPA Zone 1

ZIP 66942 (Jewell County, Kansas): predicted long-term basement average of 4.0 pCi/L (model estimate), about 1.8× the average US ZIP (2.2) and about 1.6× the Kansas average (2.6).

Test ZIP 66942 now - and consider a continuous monitor

The model predicts a long-term basement average of 4.0 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.

Get a continuous radon monitor →Or start with a short-term test kit

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.

4.0 ± 0.06

pCi/L predicted basement mean (model SD)

2.3 ± 0.07

pCi/L predicted upstairs mean

3.6 ± 0.06

pCi/L predicted typical screening test

How 66942 compares

Within Jewell County, ZIP 66942 ranks #6 of 8 ZIPs by predicted basement level; the county average is 4.7 pCi/L and its ZIPs run from 3.7 to 5.7. The county is EPA Radon Zone 1. About 247 people lived in this ZIP at the 2010 Census.

A screening test in a typical 66942 home is predicted at 3.6 pCi/L, so first-floor living space - not just the basement - can exceed the action level here. Mitigation systems are routine in this range and typically cost $800-$2,500.

Other ZIP codes in Jewell County

669565.7
669494.8
674304.1
669364.0
669414.2
669634.0
669703.7

ZIP 66942 radon questions

Is radon high in ZIP 66942?: High. The model's predicted long-term basement average for ZIP 66942 is 4.0 pCi/L (SD 0.06), with above-ground floors at 2.3 pCi/L. That is about 1.8× the average US ZIP code (2.2) and about 15% below the Jewell County average of 4.7. It ranks 6 of 8 ZIPs in the county.
Do I need to test my home in 66942?: Yes, now. A predicted average at or above the EPA action level of 4 pCi/L means most homes in 66942 would qualify for mitigation. Use a short-term charcoal kit or a continuous monitor; if the result is 4 or higher, get bids for a mitigation system (typically $800-$2,500).
What EPA radon zone is ZIP 66942 in?: ZIP 66942 lies mostly in Jewell County, which the EPA classifies as Radon Zone 1 (highest potential (predicted average > 4 pCi/L)). Zones are county-wide and date from 1993; the ZIP-level prediction above is from a 2001-2021 model built on millions of tests.

ZIP pages are generated for ZIPs predicted at or above 2.5 pCi/L and for the most populous ZIP in each county; all other ZIPs appear in their county table. Methodology.