Any type of rock including granite could contain naturally occurring radioactive elements. If present, these radioactive elements will decay into radon, a colorless, odorless, radioactive gas which may be released from the granite over time. In addition to radon, the other natural radioactive material in granite can emit radiation. However, it is extremely unlikely that granite counter-tops in homes could increase the radiation dose above the normal level.
Further information about Radon:
- EPA's Radon website includes Frequently Asked Questions (FAQs), related publications, how to locate a qualified radon service professional in your area.
- EPA Map of Radon Zones, including State Radon Information and Contacts.
EPA supports the following toll-free hotlines to best serve consumers with radon-related questions and concerns.
- 1-800-SOSRADON (1-800-767-7236)* Purchase radon test kits by phone.
- 1-800-55RADON (557-2366)* Get live help for your radon questions.
- 1-800-644-6999* Radon Fit-It Hotline. For general information on fixing or reducing the radon level in your home.
- 1-800-426-4791 Safe Drinking Water Hotline. For general information on drinking water, radon in water, testing and treatment, and standards for radon drinking water. Operated under a contract with EPA.