Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Allegany County, New York
EPA puts Allegany County in Zone 1, its highest radon zone, and only 2 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
42.6%
18.1 pts above NY
- Allegany
- 42.6%
- New York
- 24.5%
383 tests, 2008 to 2017
Median result
2.9pCi/L
Below action level
- Allegany
- 2.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
383
44th of 61 by tests
- Allegany
- 383
- Erie
- 13,822
Reported to CDC before any fix, 2008 to 2017
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
5 of 61
Top quarter
- Allegany
- 42.6%
- Chemung
- 52.3%
By share, of 61 with 30+ tests
Read a result for Allegany County
Starts at Allegany County's median, 2.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.9 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. Allegany County's median reported result, 2008 to 2017.
The data
Allegany County, At a glance
Allegany County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Allegany 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 Allegany County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 46.2% |
| 2015 | 28.6% |
| 2016 | 0.0% |
| 2017 | 44.4% |
| 2018 | 25.0% |
| 2019 | 66.7% |
| 2020 | 0.0% |
| 2021 | 0.0% |
| 2023 | 100.0% |
2023: 100.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 2 tests were reported to CDC for Allegany 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).
Allegany County, Compared
Allegany County radon figures, compared
Calculated by Radon411In Allegany County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (163 of 383) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 6.9 points higher. Across 62 New York counties pooled together, 24.5% of tests reached that level, so Allegany County runs 18.1 points above its state.
The newest figure, in 2023, counts only 2 tests (100.0% at or above 4 pCi/L), too few to compare, so this reading uses the 383-test figure.
Of 6 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 26.4% (McKean County, PA) to 52.1% (Potter County, PA). By share, Allegany County is 5th of 61 New York counties with 30 or more tests for the same period.
Half the tests came in under 2.9 pCi/L and half over it; the single highest reached 74.3 pCi/L. Below the action level, 134 tests (35.0%) came in under 2 pCi/L, against 51.7% statewide, and 86 tests (22.5%) fell between 2 and 4, against 23.7% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 42.6% share point the same way here. USGS geology rates 100% of the county's land high radon potential. CDC also counts 26 tests taken after mitigation in Allegany County for the same period: tests in homes where a fix was already in.
The busiest year on file was 2019, with 18 tests reported; the quietest, 2021, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Allegany County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Allegany 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 Allegany 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
40%
Average result
5.2 pCi/L
Tests behind these figures
9 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.
Allegany County, Geology
The ground under Allegany County
PredictedMost of the ground under Allegany County is one class on USGS's geologic map: 99.5% of its land is high radon potential, with 0.5% moderate. 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 | 99.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Allegany County beside the ground around it
Allegany County has more high-potential ground than New York as a whole: 99.5% of its land against 48.9%. Of the 6 counties that border it, 2 have more high-potential ground, Wyoming County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Allegany County, Local resources
Radon testing and mitigation in Allegany 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.
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
Allegany County, Questions
Questions about radon in Allegany County
Are radon levels high in Allegany County?
In 2023, 100.0% of the radon tests reported to CDC for Allegany County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 10.5 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 4 reported a higher share; pooled, the state comes to 24.5%.
Which counties border Allegany County?
Allegany County borders 6 counties: Wyoming County, NY, Steuben County, NY, Livingston County, NY, Potter County, PA, Cattaraugus County, NY and McKean County, PA.
Products
Allegany County, Products
Testing a home in Allegany County
In Allegany County, 42.6% of 383 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.5% pooled across New York. In Zone 1 the year-round level in Allegany 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
Monitor
RadonPro Wi-Fi radon monitor with a built-in Geiger counter
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Allegany County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Allegany County
Explore
Allegany County, Bordering counties
Counties bordering Allegany County
Calculated by Radon411- Radon levels in Potter County, PAEPA zone 2
52.1%at or above 4 pCi/L
Median 4.4 pCi/L · 167 tests · 9.5 points above Allegany County
- Radon levels in Steuben County, NYEPA zone 1
45.3%at or above 4 pCi/L
Median 3.4 pCi/L · 1,080 tests · 2.7 points above Allegany County
- Radon levels in Cattaraugus County, NYEPA zone 1
40.6%at or above 4 pCi/L
Median 3.0 pCi/L · 599 tests · 2.0 points below Allegany County
- Radon levels in Wyoming County, NYEPA zone 1
39.3%at or above 4 pCi/L
Median 3.0 pCi/L · 338 tests · 3.3 points below Allegany County
- Radon levels in Livingston County, NYEPA zone 1
38.3%at or above 4 pCi/L
Median 3.1 pCi/L · 519 tests · 4.3 points below Allegany County
- Radon levels in McKean County, PAEPA zone 2
26.4%at or above 4 pCi/L
Median 1.6 pCi/L · 174 tests · 16.2 points below Allegany County
Allegany County, Cities and towns
Cities and towns in Allegany County
The Census Bureau estimates 46,800 residents in Allegany County for July 1, 2025, 415 more than in 2020 (+0.9%). That works out to 45 people per square mile of land. No town dominates: Alfred, the largest, has 5,147 residents, 11.0% of the total. Testing is reported here more often than across the state: CDC's 383 reported tests for 2008 to 2017 come to 8.2 for every 1,000 residents (2025 estimate), against 4.9 for New York.
From Alfred to Almond, CDC publishes no figure by town: each reads Allegany County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Alfred | 5,147 | +26.4% | 11.0% |
| Wellsville | 4,504 | −2.6% | 9.6% |
| Cuba | 1,490 | −2.9% | 3.2% |
| Bolivar | 1,005 | −2.7% | 2.1% |
| Andover | 882 | −3.3% | 1.9% |
| Belmont | 826 | −3.1% | 1.8% |
| Angelica | 706 | −2.1% | 1.5% |
| Canaseraga | 451 | −2.8% | 1.0% |
| Richburg | 396 | −2.5% | 0.8% |
| Almondextends beyond Allegany County | 393 | −3.2% | Counted whole |
10 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). A place that extends beyond Allegany County is counted whole, so it has no share.
Allegany County, Homes
Homes in Allegany County
Of Allegany County's 23,538 homes, 73% are detached houses, against 41% across New York; 16% are mobile homes. Half of its homes were built before 1965, close to New York's 1958: 45% date from before 1960 and 13% from 2000 or later. Owners live in 80% of the occupied homes (New York: 54%), so for most households a test and a fix are their own to order.
| Homes | Allegany County | New York |
|---|---|---|
| Housing units | 23,538 | 8,539,536 |
| Detached houses | 73% | 41% |
| In buildings of 5 or more | 4% | 34% |
| Mobile homes | 16% | 2% |
| Built before 1960 | 45% | 53% |
| Built since 2000 | 13% | 12% |
| Middle year built | 1965 | 1958 |
| Owner-occupied | 80% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.