Radon levels in Chautauqua County, New York

ModerateEPA Zone 1

Predicted long-term basement average of 2.2 pCi/L (model estimate) across 26 ZIP codes - about 1.2× the US average of 1.8, about 1.6× the New York average of 1.4. Ranked #20 of 62 New York counties.

Test Chautauqua County, NY - the EPA says "consider fixing" in this range

The predicted basement average here is 2.2 pCi/L, in the 2-4 pCi/L band where the EPA recommends considering mitigation. Plenty of individual homes in a moderate area test above 4. Start with a short-term test; if it comes back at 2 or higher, follow up with a long-term test or a continuous monitor.

Already tested at 4 pCi/L or higher? Find a certified mitigation professional (EPA). A mitigation system typically runs $800-$2,500 installed.

We may earn a commission from Amazon at no extra cost to you.

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.

2.2 ± 0.09

pCi/L predicted basement mean (model SD)

1.3 ± 0.11

pCi/L predicted upstairs (above-ground) mean

0.8-3.0

range of ZIP-level basement predictions in the county

What this means for Chautauqua

The typical Chautauqua County home is predicted in the 2-4 pCi/L band. The EPA's guidance for this range is to consider fixing, because there is no known safe level and roughly one home in several in a moderate area will test above 4.

Note that the EPA classifies Chautauqua County as Zone 1 while the newer model predicts 2.2 pCi/L. The zone map predates two decades of test data; where they disagree, we grade on the model but show both. County figures weight each ZIP by its 2010 Census population, so they describe where people live rather than empty land.

Comparable New York counties: Yates County (2.2), Ulster County (2.2), Greene County (2.3), Sullivan County (2.3). The state's highest is Schuyler County at 2.8 pCi/L.

ZIP codes in Chautauqua County

Predicted basement and upstairs means by ZIP (model estimate). ZIPs whose land is mostly in this county.

ZIPBasementUpstairsGrade
147011.9 ± 0.110.9Low
140480.8 ± 0.190.5Low
140632.3 ± 0.061.5Moderate
147872.6 ± 0.061.5Moderate
141362.4 ± 0.061.4Moderate
147502.3 ± 0.061.4Moderate
147332.9 ± 0.071.4Moderate
147382.9 ± 0.061.7Moderate
147102.9 ± 0.071.8Moderate
147573.0 ± 0.061.8Moderate
147122.6 ± 0.061.7Moderate
140622.8 ± 0.061.7Moderate
147162.2 ± 0.061.2Moderate
147242.9 ± 0.061.9Moderate
147752.6 ± 0.061.6Moderate
147822.8 ± 0.061.7Moderate
147472.8 ± 0.061.5Moderate
147812.9 ± 0.061.7Moderate
147182.9 ± 0.051.8Moderate
147672.7 ± 0.061.7Moderate
147402.8 ± 0.061.6Moderate
147232.7 ± 0.071.7Moderate
147843.0 ± 0.071.8Moderate
147282.9 ± 0.071.7Moderate
147692.6 ± 0.061.7Moderate
147362.8 ± 0.071.7Moderate

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.

Chautauqua County radon questions

Is radon high in Chautauqua County, New York?
Moderate. The model predicts a long-term basement average of 2.2 pCi/L in Chautauqua County (about 1.2× the US average of 1.8 and about 1.6× the New York average of 1.4). That is in the 2-4 pCi/L range where the EPA recommends considering mitigation. Ranked 20 of 62 New York counties.
Should I test for radon in Chautauqua County?
Yes, soon. With a predicted average of 2.2 pCi/L, many homes in Chautauqua 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 Chautauqua County?
Zone 1 - highest potential (predicted average > 4 pCi/L). The zone map dates from 1993 and classifies whole counties. The newer model's predicted average of 2.2 pCi/L does not line up with Zone 1, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.
How much does radon mitigation cost in Chautauqua County?
A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; New York 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.

← All New York counties · How to test · Radon in a home sale · Methodology