What is Radon?

Radon is generated naturally from the decay of uranium found in nearly all soils. It typically moves through the ground to the air above.  Radon is able to enter homes and other buildings through cracks and other openings in the foundation.  Since radon is a colorless and odorless gas, most individuals are not aware that a potential health hazard exists.  Radon is measured in picocuries per liter (pCi/L) and the EPA has identified 4 pCi/L as a recommended action level. 


According to the Surgeon General, radon is the second leading cause of lung cancer in the United States and the leading cause of lung cancer among non-smokers.  Americans are urged to test their homes for radon and to remedy high radon concentrations in homes as soon as possible.

Seneca County has been designated as a Zone 1 area on the Ohio EPA’s map of Radon Zones. Zone 1 areas have a predicted average indoor screening level greater than 4.0 pCi/L

Radon test kits are available on-line and also at various stores in our area – generally for $20 or less. 


EPA - Radon Information

ODH - Radon Information

Department Info

71 South Washington Street

Suite 1102

Tiffin, OH 44883

(419) 447-3691 ext. 6321

Environmental Health Division

Seneca County General Health District

71 South Washington Street

Suite 1102

Tiffin, OH 44883

Hours of Operation

Monday - Friday

8:00 AM - 4:30 PM

© 2018 Seneca County General Health District 

71 South Washington St. Suite 1102 Tiffin, OH 44883

In the event of a public health emergency* the Seneca County General Health District can be contacted at anytime.

During regular business hours please call (419) 447-3691.

Regular business hours are Monday - Friday.

Nursing & Vital Statistics: 8:00 a.m. - 4:00 p.m.

Environmental: 8:00 a.m. - 4:30 p.m.

WIC: M-W 8:30 a.m. - 4:30 p.m., Thu. 8:30 a.m. - 7:00 p.m., Fri. 8:30 a.m. - 1:00 p.m.

After business hours, weekends, and holidays please contact the SCGHD Health Commissioner via the Seneca County Sheriff's Office at (419) 447-3456


*A public health emergency includes Class A reportable disease, foodborne illness, and bioterrorism event.  

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