That number compares with the statewide average of 31.3 percent. Radon gas is produced from the natural breakdown of uranium in the soil. It seeps into homes through cracks in the foundation or walls, construction joints and even the water supply. According to the U.S. Surgeon General, radon is the second leading cause of lung cancer in the United States.
Homeowners can also hire a state-certified company or individual to do the testing.
All companies hired to perform radon testing or mitigation work are required to be certified to do business in Pennsylvania. The area was selected for study based on its geologic potential for radon coupled with a number of high radon levels already found in the area. Residents within the survey boundary were mailed a letter containing a coupon redeemable for a free radon test kit. DEP will track results of the survey which will be shared with homeowners. All individual results will be kept confidential.