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 Broome County, New York
EPA puts Broome County in Zone 1, its highest radon zone, and only 12 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
25.0%
0.1 pts above NY
- Broome
- 25.0%
- New York
- 24.9%
6,144 tests, 2007 to 2016
Median result
1.8pCi/L
Below action level
- Broome
- 1.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2007 to 2016
Tests reported
6,144
4th of 61 by tests
- Broome
- 6,144
- 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
32 of 61
Middle half
- Broome
- 25.0%
- Chemung
- 51.7%
By share, of 61 with 30+ tests
Read a result for Broome County
Starts at Broome County's median, 1.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.8 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Broome County's median reported result, 2007 to 2016.
The data
Broome County, At a glance
Broome County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Broome 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 Broome County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 18.8% |
| 2015 | 31.3% |
| 2016 | 31.6% |
| 2017 | 44.4% |
| 2018 | 8.7% |
| 2019 | 17.3% |
| 2020 | 25.0% |
| 2021 | 33.3% |
| 2022 | 28.6% |
| 2023 | 25.0% |
2023: 25.0%. Across these years the share ran from 8.7% to 44.4%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 12 tests were reported to CDC for Broome 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).
Broome County, Compared
Broome County radon figures, compared
Calculated by Radon411Broome County's 6,144 reported tests over the 2007 to 2016 laboratory totals had a middle value of 1.8 pCi/L and a maximum of 127.0 pCi/L, and 25.0% reached 4 pCi/L. New York as a whole (62 New York counties, pooled) comes to 24.9%: 0.1 points lower than here.
The newest figure, in 2023, counts only 12 tests (25.0% at or above 4 pCi/L), too few to compare, so this reading uses the 6,144-test figure.
Among its state's counties it ranks 32nd of 61 New York counties with 30 or more tests for the same period. Statewide for the same period, Chemung County reported the highest share (51.7%) and Bronx County the lowest (2.3%).
Below the action level, 3,185 tests (51.8%) came in under 2 pCi/L, against 51.6% statewide, and 1,420 tests (23.1%) fell between 2 and 4, against 23.5% statewide. The busiest year on file was 2019, with 225 tests reported; the quietest, 2021, had 3.
EPA's 1993 zone map puts Broome County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Next door, the shares run from 26.9% in Delaware County to 50.4% in Cortland County. Over 5 years of annual figures the share held within 2 points, from 18.8% in 2014 to 17.3% in 2019; its peak was 44.4% in 2017.
CDC also counts 11 tests taken after mitigation in Broome County for the same period: tests in homes where a fix was already in.
Broome CountyNew York, pooled
17.3% % of tests28.0% % of tests
| Year | Tests | Broome County, at or above 4 pCi/L | New York, pooled |
|---|---|---|---|
| 2014 | 32 | 18.8% | 16.6% |
| 2015 | 64 | 31.3% | 21.4% |
| 2017 | 36 | 44.4% | 31.6% |
| 2018 | 208 | 8.7% | 26.9% |
| 2019 | 225 | 17.3% | 28.0% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Broome County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Broome 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 Broome 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
39%
Average result
5.8 pCi/L
Tests behind these figures
28.2 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.
Broome County, Geology
The ground under Broome County
PredictedUSGS's geologic map puts all of Broome 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 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Broome County beside the ground around it
Broome County has more high-potential ground than New York as a whole: 100% of its land against 48.9%. Of the 6 counties that border it, none has as large a share of high-potential ground; Chenango County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Broome County, Local resources
Radon testing and mitigation in Broome County
Listed radon businesses with an address in Broome 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: Binghamton
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
Broome County, Questions
Questions about radon in Broome County
Are radon levels high in Broome County?
In 2023, 25.0% of the radon tests reported to CDC for Broome County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 31 reported a higher share; pooled, the state comes to 24.9%.
Which counties border Broome County?
Broome County borders 6 counties: Chenango County, NY, Tioga County, NY, Susquehanna County, PA, Cortland County, NY, Delaware County, NY and Wayne County, PA.
Products
Broome County, Products
Testing a home in Broome County
In Broome County, 25.0% of 6,144 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 Broome 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
lüft plug-in radon and indoor air quality monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi, Bluetooth
- App only
First reading: Within 90 minutes
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
Broome County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Broome County
Explore
Broome County, Bordering counties
Counties bordering Broome County
Calculated by Radon411- Radon levels in Cortland County, NYEPA zone 1
50.4%at or above 4 pCi/L
Median 4.0 pCi/L · 736 tests · 25.4 points above Broome County
- Radon levels in Tioga County, NYEPA zone 1
39.0%at or above 4 pCi/L
Median 2.7 pCi/L · 1,426 tests · 14.0 points above Broome County
- Radon levels in Susquehanna County, PAEPA zone 1
37.9%at or above 4 pCi/L
Median 3.1 pCi/L · 253 tests · 12.9 points above Broome County
- Radon levels in Chenango County, NYEPA zone 1
34.9%at or above 4 pCi/L
Median 2.6 pCi/L · 971 tests · 9.9 points above Broome County
- Radon levels in Wayne County, PAEPA zone 2
34.3%at or above 4 pCi/L
Median 3.0 pCi/L · 265 tests · 9.3 points above Broome County
- Radon levels in Delaware County, NYEPA zone 1
26.9%at or above 4 pCi/L
Median 1.8 pCi/L · 931 tests · 1.9 points above Broome County
Broome County, Cities and towns
Cities and towns in Broome County
About 195,736 people live in Broome County by the Census Bureau's estimate for July 1, 2025, 2,409 fewer than in 2020 (−1.2%). That works out to 277 people per square mile of land. Its largest town, Binghamton, has 46,418 residents, 23.7% of the total. Testing is reported here more often than across the state: CDC's 6,144 reported tests for 2007 to 2016 come to 31.4 for every 1,000 residents (2025 estimate), against 4.6 for New York.
From Binghamton to Lisle, CDC publishes no figure by town: each reads Broome County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Binghamton | 46,418 | −2.8% | 23.7% |
| Johnson City | 14,580 | −3.8% | 7.4% |
| Endicott | 13,068 | −4.2% | 6.7% |
| Port Dickinson | 1,654 | −3.9% | 0.8% |
| Depositextends beyond Broome County | 1,404 | −3.4% | Counted whole |
| Whitney Point | 900 | −3.3% | 0.5% |
| Windsor | 857 | −3.8% | 0.4% |
| Lisle | 323 | −3.9% | 0.2% |
Places in Broome County with a city page: 1 of 1
8 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 Broome County is counted whole, so it has no share.
Broome County, Homes
Homes in Broome County
Of Broome County's 92,889 homes, 61% are detached houses, against 41% across New York; 14% are in buildings of five or more homes. Half of its homes were built before 1959, close to New York's 1958: 52% date from before 1960 and 6% from 2000 or later. 65% 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 | Broome County | New York |
|---|---|---|
| Housing units | 92,889 | 8,539,536 |
| Detached houses | 61% | 41% |
| In buildings of 5 or more | 14% | 34% |
| Mobile homes | 4% | 2% |
| Built before 1960 | 52% | 53% |
| Built since 2000 | 6% | 12% |
| Middle year built | 1959 | 1958 |
| Owner-occupied | 65% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.