Listed for: Mitigation
Verified:Ohio state license
Call All-Star Contracting at (440) 991-6212No website listed
Locations and reports
Radon in Cleveland, Ohio
EPA puts Cuyahoga County, where Cleveland is, in Zone 2, its middle radon zone, and 21.7% of its 10,092 reported radon tests (2008 to 2017, laboratory totals) were 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
21.7%
30.6 pts below OH
- Cuyahoga
- 21.7%
- Ohio
- 52.3%
Cuyahoga, 79th of 79 in OH, 2008 to 2017
Median result
2.0pCi/L
Below action level
- Cuyahoga
- 2.0 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Cuyahoga's tests, 2008 to 2017
Nearest county
38.7%
Summit, 25 miles
- Summit
- 38.7%
- Cuyahoga
- 21.7%
6,486 tests, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
Cuyahoga, where Cleveland is
Tests reported
10,092
In Cuyahoga
- Cuyahoga
- 10,092
- Summit
- 6,486
Reported to CDC before any fix, 2008 to 2017
Read a result for Cleveland
Starts at Cuyahoga County's median, 2.0 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.0 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. Cuyahoga County's median reported result, 2008 to 2017.
The data
Cleveland, What is published
What is published for Cleveland
Information:
Every figure for Cleveland is a county's
Radon data is published by county, not by city, so for Cleveland it is Cuyahoga County's: its EPA zone (Zone 2) and the 10,092 tests reported to CDC for 2008 to 2017, laboratory. Only a test tells you about one home.
Cleveland covers 77.7 square miles of land, all of it in Cuyahoga County. About 363,608 people live there, 4,678 to the square mile.
Cleveland, Counties
The county Cleveland lies in
MeasuredCuyahoga County's EPA zone and the figures CDC publishes for it, 2008 to 2017, laboratory.
Cuyahoga CountyZone 2Moderate predicted potential
- 21.7%
- Reported tests at or above 4 pCi/L
- 2.0 pCi/L
- Median reported result
- 10,092 tests
- Tests reported to CDC
- None
- Yearly figures on file
Cuyahoga County ranks 79th of 79 Ohio counties with 30 or more tests for that period, 30.6 points below the 52.3% pooled across Ohio's counties, 14.0 points below the national pool of 35.7%.
Measured from the middle of Cleveland, the nearest counties with a CDC figure for 2008 to 2017, laboratory are Summit County (25 miles, 38.7% of 6,486 tests), Geauga County (26 miles, 23.4% of 1,469 tests) and Medina County (27 miles, 43.4% of 2,139 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 23.4% to 61.8%; the farthest of them, Stark County, is 49 miles away at 60.1%.
The directory lists 3 businesses with an address in Cleveland, 1 for testing and 2 for mitigation. Ohio's other cities with a page of their own: Columbus, Dayton, Cincinnati and Toledo.
The counties around Cleveland
By distance from the middle of Cleveland; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2008 to 2017, laboratory.
Cleveland, Geology
The ground under Cleveland
PredictedUSGS's geologic map puts all of Cleveland's mapped land in one class: moderate radon potential. The map puts 87.4% of Cleveland in the area it calls Lake Plains and 12.1% in Glaciated Plateau. USGS gives the first a radon index of 10 and the second 11, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Lake Plains | Glacial lake deposits, Devonian shale and limestone. | Moderate | 10 | 87.4% |
| Glaciated Plateau | Devonian, Mississippian and Permian carbonates and shales. | Moderate | 11 | 12.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cleveland beside its county and Ohio
The ground under Cleveland is close to Cuyahoga County's as a whole: 99.5% rated moderate against 99.9%. Across Ohio 62.8% of the land is rated high; none of Cleveland's is.
The map rates the ground, not the air in any home.
Cleveland, Homes
Homes in Cleveland
Fewer than six in ten of Cleveland's 200,542 homes are detached houses (47%, against 59% across Cuyahoga County); the rest are attached, in shared buildings or mobile. The homes are older than Cuyahoga County's as a whole: half were built before 1940 (1957 for Cuyahoga County), and 73% date from before 1960. Most occupied homes here are rented: owners live in 41% (Cuyahoga County: 59%). A tenant can run a test; a fix is the landlord's to make.
| Homes | Cleveland | Cuyahoga County | Ohio |
|---|---|---|---|
| Housing units | 200,542 | 615,513 | 5,271,573 |
| Detached houses | 47% | 59% | 69% |
| In buildings of 5 or more | 25% | 24% | 15% |
| Mobile homes | 1% | 1% | 4% |
| Built before 1960 | 73% | 57% | 38% |
| Built since 2000 | 8% | 7% | 16% |
| Middle year built | 1940 | 1957 | 1970 |
| Owner-occupied | 41% | 59% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Cleveland, Professionals
Radon professionals listed in Cleveland
Businesses whose listed city is Cleveland, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Cleveland: 1 of 3
3 listings with Cleveland as the city. See radon mitigation and testing in Cleveland, or all radon professionals in Ohio.
Cleveland, Local resources
Local resources for Cleveland
Who to ask in Ohio: its radon program, test kits and professionals.
What it means
Cleveland, Questions
Questions about radon in Cleveland
What radon zone is Cleveland in?
Cleveland takes its zone from Cuyahoga County, which EPA puts in Zone 2, the map's middle class: a predicted county average of 2 to 4 pCi/L.
What are radon levels in Cleveland?
Most tests near Cleveland come back under EPA's action level, but not all: 21.7% of Cuyahoga County's 10,092 tests for 2008 to 2017 (laboratory totals) were at or above 4 pCi/L. The median reported result was 2.0 pCi/L.
Should I test my home in Cleveland?
Yes. In Cuyahoga County, about one reported test in 5 reached 4 pCi/L. That is below Ohio's pooled 52.3%, and still not a reason to skip it, and ranks Cuyahoga County 79th of the 79 Ohio counties with 30 or more tests. The number for one house comes only from testing it. How to test a home.
What ground is Cleveland built on, as far as radon goes?
87.4% of Cleveland sits on what USGS's map calls "Lake Plains", rated moderate for radon potential, radon index 10; another 12.1% is "Glaciated Plateau", in the same class.
Is radon higher in the counties around Cleveland?
Higher, in every direction measured: all 8 of the nearest counties with a figure report a larger share of high tests than Cuyahoga County's 21.7%, up to Wayne County (61.8%, 46 miles off).
Who tests for or fixes radon in Cleveland?
Cleveland is the address of 3 businesses in Radon411's directory, 1 listed for testing and 2 for mitigation. Each entry names the public list it came from. Radon professionals in Cleveland.
The answers use the published figures of Cuyahoga County, the county Cleveland lies in.
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