Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Erie County, Ohio
EPA puts Erie County in Zone 2, its middle radon zone, and high results are common there: 54.5% of the 1,651 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
54.5%
2.2 pts above OH
- Erie
- 54.5%
- Ohio
- 52.3%
1,651 tests, 2008 to 2017
Median result
4.4pCi/L
Action level reached
- Erie
- 4.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
1,651
16th of 79 by tests
- Erie
- 1,651
- Franklin
- 16,142
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Ohio
41 of 79
Middle half
- Erie
- 54.5%
- Pickaway
- 81.4%
By share, of 79 with 30+ tests
Read a result for Erie County
Starts at Erie County's median, 4.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.4 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. Erie County's median reported result, 2008 to 2017.
The data
Erie County, At a glance
Erie County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Erie County is a
USGS geologic potential: Moderate across 56% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Erie County, 2008 to 2017, laboratory
Under 2 pCi/L: 19%2 to 4 pCi/L: 26%4 pCi/L and above: 55%
Of 1,651 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 322 | 19.5% |
| 2 to 4 pCi/L | 430 | 26.0% |
| 4 pCi/L and above | 899 | 54.5% |
What these figures count
These are the 1,651 tests reported to CDC for Erie County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Erie County, Compared
Erie County radon figures, compared
Calculated by Radon411More than half: 54.5% of the 1,651 radon tests reported to CDC for Erie County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 41st of 79 Ohio counties with 30 or more tests for the same period. That is 2.2 points above the 52.3% pooled from 88 Ohio counties.
The median result, 4.4 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 247.5 pCi/L. The rest split 19.5% under 2 pCi/L and 26.0% from 2 to 4 (Ohio: 23.1% and 24.6%). The reported tests do not follow EPA's Zone 2 label for Erie County (predicted average between 2 and 4 pCi/L): 54.5% of them reached 4 pCi/L, fewer than that label suggests.
2 of its 4 bordering counties with figures ran higher, led by Huron County at 59.4%; Ottawa County reported 40.3%. Statewide for the same period, Pickaway County reported the highest share (81.4%) and Cuyahoga County the lowest (21.7%).
CDC's ten-year totals for Erie County went from 1,353 tests (2005 to 2014) to 1,651 (2008 to 2017), the share going from 52.6% to 54.5%.
Nationally, every county with a figure for the same period pools to 35.7%; Erie County sits 18.8 points above it. CDC also counts 288 tests taken after mitigation in Erie County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Erie County, Geology
The ground under Erie County
PredictedUSGS's geologic map splits Erie County: 56.5% of its land is moderate radon potential and 41.3% high. The map puts 41.3% of Erie County in the area it calls Till Plains and 41.0% in Lake Plains, with one smaller area beside them. USGS gives the first a radon index of 14, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Till Plains | Glacial deposits underlain by Ordovician through Devonian limestone and shale. | High | 14 | 41.3% |
| Lake Plains | Glacial lake deposits, Devonian shale and limestone. | Moderate | 10 | 41.0% |
| Glaciated Plateau | Devonian, Mississippian and Permian carbonates and shales. | Moderate | 11 | 15.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Erie County beside the ground around it
Ohio as a whole has more high-potential ground than Erie County: 62.8% of its land, against 41.3% here. Of the 4 counties that border it, 2 have more high-potential ground, Huron County the most at 67.4%.
The map rates the ground, not the air in any home.
Local help
Erie County, Local resources
Radon testing and mitigation in Erie County
Listed radon businesses with an address in Erie County:
- Radon Education and Licensing ProgramRadon Education and Licensing Program, run by Ohio Department of Health, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Ohio.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Free radon test kits are available for Ohio homeowners.
- Compare kits
- Professionals in Ohio479 professionals are listed in Ohio.
Listed radon professionals by town: Sandusky, Bellevue
What Ohio's program says
- Phone
- 614-728-0272
- indoor.radon@odh.ohio.gov
- Licensing of radon professionals
This program licenses companies and persons directly involved with the radon testing and mitigation industry.
What it means
Erie County, Questions
Questions about radon in Erie County
Are radon levels high in Erie County?
Over the 2008 to 2017 laboratory totals, 54.5% of the radon tests reported to CDC for Erie County, Ohio were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.4 pCi/L. Of 79 Ohio counties with 30 or more tests for the same period, 40 reported a higher share; pooled, the state comes to 52.3%.
Which counties border Erie County?
Erie County borders 4 counties: Huron County, Sandusky County, Ottawa County and Lorain County.
Products
Erie County, Products
Testing a home in Erie County
In Erie County, 54.5% of 1,651 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 52.3% pooled across Ohio. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Erie County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
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
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Erie County, Bordering counties
Counties bordering Erie County
Calculated by Radon411- Radon levels in Huron CountyEPA zone 1
59.4%at or above 4 pCi/L
Median 4.9 pCi/L · 796 tests · 4.9 points above Erie County
- Radon levels in Sandusky CountyEPA zone 2
59.2%at or above 4 pCi/L
Median 5.0 pCi/L · 649 tests · 4.7 points above Erie County
- Radon levels in Lorain CountyEPA zone 2
45.4%at or above 4 pCi/L
Median 3.6 pCi/L · 3,307 tests · 9.1 points below Erie County
- Radon levels in Ottawa CountyEPA zone 2
40.3%at or above 4 pCi/L
Median 2.9 pCi/L · 541 tests · 14.2 points below Erie County
Erie County, Cities and towns
Cities and towns in Erie County
About 73,296 people live in Erie County by the Census Bureau's estimate for July 1, 2025, 2,175 fewer than in 2020 (−2.9%). That works out to 292 people per square mile of land. Its largest town, Sandusky, has 24,001 residents, 32.7% of the total. Testing is reported here more often than across the state: CDC's 1,651 reported tests for 2008 to 2017 come to 22.5 for every 1,000 residents (2025 estimate), against 8.3 for Ohio.
From Sandusky to Kelleys Island, CDC publishes no figure by town: each reads Erie County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Sandusky | 24,001 | −4.3% | 32.7% |
| Vermilionextends beyond Erie County | 10,695 | +0.3% | Counted whole |
| Bellevueextends beyond Erie County | 8,154 | −1.1% | Counted whole |
| Huron | 6,585 | −4.4% | 9.0% |
| Milanextends beyond Erie County | 1,344 | −1.8% | Counted whole |
| Castalia | 744 | −3.9% | 1.0% |
| Berlin Heights | 679 | +4.8% | 0.9% |
| Bay View | 588 | −2.3% | 0.8% |
| Kelleys Island | 263 | +1.9% | 0.4% |
9 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 Erie County is counted whole, so it has no share.
Erie County, Homes
Homes in Erie County
Of Erie County's 38,400 homes, 73% are detached houses, against 69% across Ohio; 10% are in buildings of five or more homes. Half of its homes were built before 1966, close to Ohio's 1970: 43% date from before 1960 and 10% from 2000 or later. 71% of occupied homes are lived in by their owner (Ohio: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Erie County | Ohio |
|---|---|---|
| Housing units | 38,400 | 5,271,573 |
| Detached houses | 73% | 69% |
| In buildings of 5 or more | 10% | 15% |
| Mobile homes | 3% | 4% |
| Built before 1960 | 43% | 38% |
| Built since 2000 | 10% | 16% |
| Middle year built | 1966 | 1970 |
| Owner-occupied | 71% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.