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 Steuben County, New York
EPA puts Steuben County in Zone 1, its highest radon zone, and only 5 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
45.3%
20.8 pts above NY
- Steuben
- 45.3%
- New York
- 24.5%
1,080 tests, 2008 to 2017
Median result
3.4pCi/L
Below action level
- Steuben
- 3.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
1,080
23rd of 61 by tests
- Steuben
- 1,080
- 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
4 of 61
Top quarter
- Steuben
- 45.3%
- Chemung
- 52.3%
By share, of 61 with 30+ tests
Read a result for Steuben County
Starts at Steuben County's median, 3.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.4 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. Steuben County's median reported result, 2008 to 2017.
The data
Steuben County, At a glance
Steuben County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Steuben 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 Steuben County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 34.5% |
| 2015 | 57.5% |
| 2016 | 29.4% |
| 2017 | 45.2% |
| 2018 | 16.7% |
| 2019 | 55.3% |
| 2020 | 55.2% |
| 2021 | 54.5% |
| 2022 | 30.0% |
| 2023 | 60.0% |
2023: 60.0%. Across these years the share ran from 16.7% to 60.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 5 tests were reported to CDC for Steuben 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).
Steuben County, Compared
Steuben County radon figures, compared
Calculated by Radon411In Steuben County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (489 of 1,080) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 9.6 points higher. Across 62 New York counties pooled together, 24.5% of tests reached that level, so Steuben County runs 20.8 points above its state.
The newest figure, in 2023, counts only 5 tests (60.0% at or above 4 pCi/L), too few to compare, so this reading uses the 1,080-test figure.
Of 8 neighbours with a figure, 3 reported a larger share at or above 4 pCi/L and 5 a smaller one; the spread is 32.8% (Ontario County) to 52.3% (Chemung County). By share, Steuben County is 4th of 61 New York counties with 30 or more tests for the same period.
Year by year, 2014 opened at 34.5% and 2022 closed at 30.0% (down 4.5 points), with 2015 the high at 57.5%. Half the tests came in under 3.4 pCi/L and half over it; the single highest reached 260.6 pCi/L. Below the action level, 373 tests (34.5%) came in under 2 pCi/L, against 51.7% statewide, and 218 tests (20.2%) fell between 2 and 4, against 23.7% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 45.3% share point the same way here. USGS geology rates 100% of the county's land high radon potential. CDC also counts 149 tests taken after mitigation in Steuben County for the same period: tests in homes where a fix was already in.
The busiest year on file was 2019, with 132 tests reported; the quietest, 2023, had 5.
Steuben CountyNew York, pooled
30.0% % of tests22.4% % of tests
| Year | Tests | Steuben County, at or above 4 pCi/L | New York, pooled |
|---|---|---|---|
| 2014 | 84 | 34.5% | 16.6% |
| 2015 | 40 | 57.5% | 21.4% |
| 2016 | 85 | 29.4% | 20.4% |
| 2017 | 84 | 45.2% | 31.6% |
| 2018 | 48 | 16.7% | 26.9% |
| 2019 | 132 | 55.3% | 28.0% |
| 2020 | 67 | 55.2% | 22.7% |
| 2022 | 30 | 30.0% | 22.4% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Steuben County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Steuben 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 Steuben 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
47.2%
Average result
7.8 pCi/L
Tests behind these figures
53.4 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.
Steuben County, Geology
The ground under Steuben County
PredictedUSGS's geologic map puts all of Steuben 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.
Steuben County beside the ground around it
Steuben County has more high-potential ground than New York as a whole: 100% of its land against 48.9%. Of the 8 counties that border it, none has as large a share of high-potential ground; Chemung County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Steuben County, Local resources
Radon testing and mitigation in Steuben 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
Steuben County, Questions
Questions about radon in Steuben County
Are radon levels high in Steuben County?
In 2023, 60.0% of the radon tests reported to CDC for Steuben County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 12.0 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 3 reported a higher share; pooled, the state comes to 24.5%.
Which counties border Steuben County?
Steuben County borders 8 counties: Yates County, NY, Schuyler County, NY, Allegany County, NY, Livingston County, NY, Ontario County, NY, Chemung County, NY, Potter County, PA and Tioga County, PA.
Products
Steuben County, Products
Testing a home in Steuben County
In Steuben County, 45.3% of 1,080 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 Steuben 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
MonitorAEGTEST
HOUND-3699 radon monitor with a 2.1-inch touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
First reading: Within 1 hour
Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Steuben County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Steuben County
Explore
Steuben County, Bordering counties
Counties bordering Steuben County
Calculated by Radon411- Radon levels in Chemung County, NYEPA zone 1
52.3%at or above 4 pCi/L
Median 4.3 pCi/L · 1,537 tests · 7.0 points above Steuben County
- Radon levels in Potter County, PAEPA zone 2
52.1%at or above 4 pCi/L
Median 4.4 pCi/L · 167 tests · 6.8 points above Steuben County
- Radon levels in Yates County, NYEPA zone 1
45.9%at or above 4 pCi/L
Median 3.5 pCi/L · 135 tests · 0.6 points above Steuben County
- Radon levels in Allegany County, NYEPA zone 1
42.6%at or above 4 pCi/L
Median 2.9 pCi/L · 383 tests · 2.7 points below Steuben County
- Radon levels in Tioga County, PAEPA zone 1
40.3%at or above 4 pCi/L
Median 3.0 pCi/L · 305 tests · 5.0 points below Steuben County
- Radon levels in Schuyler County, NYEPA zone 1
38.6%at or above 4 pCi/L
Median 2.5 pCi/L · 236 tests · 6.7 points below Steuben County
- Radon levels in Livingston County, NYEPA zone 1
38.3%at or above 4 pCi/L
Median 3.1 pCi/L · 519 tests · 7.0 points below Steuben County
- Radon levels in Ontario County, NYEPA zone 1
32.8%at or above 4 pCi/L
Median 2.6 pCi/L · 1,448 tests · 12.5 points below Steuben County
Steuben County, Cities and towns
Cities and towns in Steuben County
About 91,855 people live in Steuben County by the Census Bureau's estimate for July 1, 2025, 1,516 fewer than in 2020 (−1.6%). That works out to 66 people per square mile of land. No town dominates: Corning, the largest, has 10,514 residents, 11.4% of the total. Testing is reported here more often than across the state: CDC's 1,080 reported tests for 2008 to 2017 come to 11.8 for every 1,000 residents (2025 estimate), against 4.9 for New York.
From Corning to Almond, CDC publishes no figure by town: each reads Steuben County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Corning | 10,514 | −0.6% | 11.4% |
| Hornell | 8,024 | −2.8% | 8.7% |
| Bath | 5,545 | −1.0% | 6.0% |
| Canisteo | 2,140 | −3.1% | 2.3% |
| Painted Post | 1,704 | −3.7% | 1.9% |
| Wayland | 1,676 | −3.6% | 1.8% |
| Addison | 1,541 | −3.3% | 1.7% |
| South Corning | 1,068 | −3.1% | 1.2% |
| Avoca | 836 | −3.0% | 0.9% |
| North Hornell | 765 | −2.2% | 0.8% |
| Arkport | 758 | −3.3% | 0.8% |
| Cohocton | 709 | −3.3% | 0.8% |
- Savona
- Hammondsport
- Riverside
- Almond (part)
16 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Steuben County, Homes
Homes in Steuben County
Of Steuben County's 47,565 homes, 68% are detached houses, against 41% across New York; 13% are mobile homes. Half of its homes were built before 1964, close to New York's 1958: 47% date from before 1960 and 12% from 2000 or later. 74% 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 | Steuben County | New York |
|---|---|---|
| Housing units | 47,565 | 8,539,536 |
| Detached houses | 68% | 41% |
| In buildings of 5 or more | 8% | 34% |
| Mobile homes | 13% | 2% |
| Built before 1960 | 47% | 53% |
| Built since 2000 | 12% | 12% |
| Middle year built | 1964 | 1958 |
| Owner-occupied | 74% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.