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Radon in Seneca, South Carolina

Seneca, South Carolina lies in Oconee County, which EPA places in Zone 2, moderate predicted potential. Radon data is published by county, so this page reads Oconee County's figures.

South CarolinaAbout 9,424 people

What this means for you

  • Your area: EPA rates Oconee County, where Seneca is, Zone 2, the middle of its three radon zones. That is a prediction for the whole county, and homes with elevated levels occur in all three zones.
  • Local tests: Of 2,469 radon tests reported to CDC for Oconee County (2008 to 2017, laboratory), 42.6% were at or above 4 pCi/L, EPA's action level.
  • Your home: The only way to know your home’s level is to test it.
How to testFind a certified tester

pCi/L (picocuries per liter) is the unit radon is measured in. EPA recommends fixing a home at 4 pCi/L or above, its action level.

Seneca, What is published

What is published for Seneca

Information:

Radon data is published by county, not by city

Radon data is published by county, not by city. EPA assigns radon zones to counties, and CDC publishes radon test figures by county. Neither publishes a figure for Seneca, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.

Oconee County has an EPA zone and its own CDC test figures, shown below. About 9,424 people live in Seneca.

Seneca, Counties

The county Seneca lies in

Measured

Each county's own EPA zone and its own published CDC figures for 2008 to 2017, laboratory, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.

Oconee CountyZone 2Moderate predicted potential

42.6%
Reported tests at or above 4 pCi/L, 2008 to 2017, laboratory
3.3 pCi/L
Median reported result
2,469 tests
Tests reported to CDC
0
Annual years on file

The median reported pre-mitigation result for 2008 to 2017, laboratory was 3.3 pCi/L in Oconee County.

CDC counts radon tests that were reported to it, not homes, and figures from few tests can swing widely from year to year. Each county’s report has its full history.

Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2008 to 2017, laboratory.

Seneca, Local resources

Local resources for Seneca

Who to ask in South Carolina: the state's radon program, test kits and professionals.

South Carolina Radon Program

South Carolina Department of Environmental Services

South Carolina’s radon program answers questions about testing, mitigation and the rules where you live.

Phone
1-800-768-0362
Email
radon@des.sc.gov
Visit the program's page(opens in a new tab)

Test kits

The program says: The South Carolina Radon Program offers free short-term radon test kits to South Carolina homeowners, subject to availability.

Free and low-cost kitsCompare kits

Radon professionals

Radon testers and mitigators in South Carolina, each with how its listing was checked.

Professionals in South Carolina

Seneca, Questions

Questions about radon in Seneca

What radon zone is Seneca in?

EPA's Map of Radon Zones classifies counties, not cities. Oconee County is in Zone 2 (moderate predicted potential). A zone is a prediction for a whole county and never tells you the level in one home.

How many radon tests come back high in Seneca's counties?

For 2008 to 2017, laboratory, the share of radon tests reported to CDC that were at or above 4 pCi/L was 42.6% in Oconee County (2,469 tests). Each is that county's own figure, counting tests reported to CDC, not homes. Radon411 does not average or combine them into a figure for the city.

Should I test my home in Seneca?

Yes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. How to test a home.

The answers use the published figures of Oconee County, the county Seneca lies in.

Seneca, Keep reading

Keep reading

Seneca / Next steps

What to do next