In New Jersey, there is a particularly uranium rich geological formation called the Reading Prong, which stretches from PA through northwest NJ into southern NY state. Testing of homes built along this geologic formation has revealed high indoor levels of radon gas. The NJDEP has concluded that radon is a statewide health issue. All homeowners are encouraged to test and, if levels are elevated, residents are urged to consider remediation.
Radon decay products that are inhaled, can become trapped in the lungs where they emit radiation. These decay products can damage lung tissue and increase the risk of developing lung cancer. Lung cancer is the only known health effect linked to radon exposure at this time. The EPA estimates that between 15,000 and 22,000 of the 125,000 deaths from lung cancer may be attributable to radon exposure.