Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Chautauqua County, New York
EPA puts Chautauqua County in Zone 1, its highest radon zone, and only 4 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
37.8%
12.9 pts above NY
- Chautauqua
- 37.8%
- New York
- 24.9%
1,013 tests, 2007 to 2016
Median result
2.4pCi/L
Below action level
- Chautauqua
- 2.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2007 to 2016
Tests reported
1,013
22nd of 61 by tests
- Chautauqua
- 1,013
- Erie
- 12,998
Reported to CDC before any fix, 2007 to 2016
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in New York
13 of 61
Top quarter
- Chautauqua
- 37.8%
- Chemung
- 51.7%
By share, of 61 with 30+ tests
Read a result for Chautauqua County
Starts at Chautauqua County's median, 2.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.4 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Chautauqua County's median reported result, 2007 to 2016.
The data
Chautauqua County, At a glance
Chautauqua County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Chautauqua County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Chautauqua County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 30.0% |
| 2015 | 26.7% |
| 2016 | 41.7% |
| 2017 | 81.8% |
| 2018 | 20.0% |
| 2019 | 40.0% |
| 2020 | 50.0% |
| 2021 | 0.0% |
| 2023 | 50.0% |
2023: 50.0%. Across these years the share ran from 0.0% to 81.8%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 4 tests were reported to CDC for Chautauqua County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Chautauqua County, Compared
Chautauqua County radon figures, compared
Calculated by Radon411In Chautauqua County, about 4 in 10 reported tests over the 2007 to 2016 laboratory totals (383 of 1,013) were at or above EPA's action level. Against the national pool of 35.8%, the gap is 2.0 points higher. Across 62 New York counties pooled together, 24.9% of tests reached that level, so Chautauqua County runs 12.9 points above its state.
The newest figure, in 2023, counts only 4 tests (50.0% at or above 4 pCi/L), too few to compare, so this reading uses the 1,013-test figure.
Of 4 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 19.0% (Erie County) to 54.3% (Warren County, PA). By share, Chautauqua County is 13th of 61 New York counties with 30 or more tests for the same period.
Half the tests came in under 2.4 pCi/L and half over it; the single highest reached 129.8 pCi/L. Below the action level, 439 tests (43.3%) came in under 2 pCi/L, against 51.6% statewide, and 191 tests (18.9%) fell between 2 and 4, against 23.5% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 37.8% share point the same way here. USGS geology rates 100% of the county's land high radon potential. CDC also counts 139 tests taken after mitigation in Chautauqua County for the same period: tests in homes where a fix was already in.
The busiest year on file was 2015, with 15 tests reported; the quietest, 2021, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Chautauqua County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Chautauqua County, with their period. These are not CDC's figures and are never added to them.
MeasuredState figures, not CDC's
What the New York State Department of Health reports for Chautauqua County
Indoor air radon testing data (Environmental Public Health Tracker): short-term charcoal canister tests requested through the NYSDOH Radon Program, presented as five-year rolling averages. Period: 2015-2019. The publisher also lists 15 earlier periods.
Share at or above 4 pCi/L
42%
Average result
4.5 pCi/L
Tests behind these figures
10 tests a year on average
- Every figure is a five-year rolling average: the average result is the rolling average of each year's mean, and the test count is an average per year.
- The data only include tests requested through the NYSDOH Radon Program, and therefore may not capture all radon tests performed in a county.
- The data include both screening tests and post-mitigation tests, as it is not always possible to tell them apart.
- Radon testing by homeowners is optional in New York, so the values may not be representative of every home in the county.
- These figures describe tests reported to the New York State Department of Health in this area. They count a different set of tests than CDC's figures and are not a reading of any one home.
Measured: New York State Department of Health data, 2015-2019.
Chautauqua County, Geology
The ground under Chautauqua County
PredictedUSGS's geologic map puts all of Chautauqua County's mapped land in one class: high radon potential. All of it lies in the area the map calls Allegheny Plateau, to which USGS gives a radon index of 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Allegheny Plateau | Shale, limestone, and sandstone. | High | 12 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Chautauqua County beside the ground around it
Chautauqua County has more high-potential ground than New York as a whole: 99.9% of its land against 48.9%. Of the 4 counties that border it, none has as large a share of high-potential ground; Erie County comes nearest at 81.2%.
The map rates the ground, not the air in any home.
Local help
Chautauqua County, Local resources
Radon testing and mitigation in Chautauqua County
Listed radon businesses with an address in Chautauqua County:
- Radon ProgramRadon Program, run by New York State Department of Health, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in New York.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Providing patients with information about how low-cost test kits may be obtained from the Radon Program.
- Compare kits
- Professionals in New York88 professionals are listed in New York.
Listed radon professionals by town: Falconer
What New York's program says
- Phone
- 518-402-7556
- radon@health.ny.gov
- Licensing of radon professionals
NYS does not certify or license radon testers.
What it means
Chautauqua County, Questions
Questions about radon in Chautauqua County
Are radon levels high in Chautauqua County?
In 2023, 50.0% of the radon tests reported to CDC for Chautauqua County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 18.2 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 12 reported a higher share; pooled, the state comes to 24.9%.
Which counties border Chautauqua County?
Chautauqua County borders 4 counties: Cattaraugus County, NY, Erie County, PA, Warren County, PA and Erie County, NY.
Products
Chautauqua County, Products
Testing a home in Chautauqua County
In Chautauqua County, 37.8% of 1,013 tests reported to CDC over the 2007 to 2016 laboratory totals reached 4 pCi/L, against 24.9% pooled across New York. In Zone 1 the year-round level in Chautauqua County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
MonitorX-Sense
XR0A-iR Wi-Fi battery radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Wi-Fi
- Screen, app
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Chautauqua County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Chautauqua County
Explore
Chautauqua County, Bordering counties
Counties bordering Chautauqua County
Calculated by Radon411- Radon levels in Warren County, PAEPA zone 2
54.3%at or above 4 pCi/L
Median 4.4 pCi/L · 385 tests · 16.5 points above Chautauqua County
- Radon levels in Cattaraugus County, NYEPA zone 1
40.9%at or above 4 pCi/L
Median 3.0 pCi/L · 538 tests · 3.1 points above Chautauqua County
- Radon levels in Erie County, PAEPA zone 2
32.7%at or above 4 pCi/L
Median 2.6 pCi/L · 5,571 tests · 5.1 points below Chautauqua County
- Radon levels in Erie County, NYEPA zone 1
19.0%at or above 4 pCi/L
Median 1.5 pCi/L · 12,998 tests · 18.8 points below Chautauqua County
Chautauqua County, Cities and towns
Cities and towns in Chautauqua County
About 124,126 people live in Chautauqua County by the Census Bureau's estimate for July 1, 2025, 3,257 fewer than in 2020 (−2.6%). That works out to 117 people per square mile of land. Its largest town, Jamestown, has 27,663 residents, 22.3% of the total. Together its 15 incorporated places hold 53.4% of those residents; the other 46.6% live outside any of them. Testing is reported here more often than across the state: CDC's 1,013 reported tests for 2007 to 2016 come to 8.2 for every 1,000 residents (2025 estimate), against 4.6 for New York.
From Jamestown to Bemus Point, CDC publishes no figure by town: each reads Chautauqua County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Jamestown | 27,663 | −3.5% | 22.3% |
| Dunkirk | 12,326 | −3.2% | 9.9% |
| Fredonia | 9,283 | −4.0% | 7.5% |
| Lakewood | 2,922 | −2.5% | 2.4% |
| Westfield | 2,888 | −3.6% | 2.3% |
| Silver Creek | 2,575 | −3.1% | 2.1% |
| Falconer | 2,210 | −3.3% | 1.8% |
| Mayville | 1,474 | +3.2% | 1.2% |
| Brocton | 1,310 | −2.6% | 1.1% |
| Celoron | 1,049 | −2.8% | 0.8% |
| Sherman | 649 | −2.8% | 0.5% |
| Sinclairville | 567 | −2.9% | 0.5% |
- Cassadaga
- Panama
- Bemus Point
15 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Chautauqua County, Homes
Homes in Chautauqua County
Of Chautauqua County's 66,328 homes, 69% are detached houses, against 41% across New York; 7% are in buildings of five or more homes. Half of its homes were built before 1953, close to New York's 1958: 59% date from before 1960 and 8% from 2000 or later. 69% of occupied homes are lived in by their owner (New York: 54%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Chautauqua County | New York |
|---|---|---|
| Housing units | 66,328 | 8,539,536 |
| Detached houses | 69% | 41% |
| In buildings of 5 or more | 7% | 34% |
| Mobile homes | 6% | 2% |
| Built before 1960 | 59% | 53% |
| Built since 2000 | 8% | 12% |
| Middle year built | 1953 | 1958 |
| Owner-occupied | 69% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.