You can't see or smell or taste radon. It is a gas that comes from the natural (radioactive) breakdown of uranium in the soil, rock and water. Radon typically moves into the home through cracks and other holes in the foundations and gaps around service pipes. Elevated levels have been found in homes throughout the state, and testing is recommended to see where problems may exist.

The amount of radon in the air is measured in "picocuries " per liter of air, or pCi/L. The average indoor radon level is estimated to be about 1.3 pCi/L Most homes today can be reduced to 2 pCi/L or below. Remediation in the home is recommended for any radon levels above 4 pCi/L . Even if your result is below 4 pCi/L, you may want to test again sometime in the future.

Many low-cost do-it-yourself testing kits are available in hardware stores and other retail outlets. Make sure that you are buying a test that has passed EPA's testing program, or is state-certified. You also can hire a trained contractor to do the testing, but make certain the contractor is EPA-qualified or state-certified for radon testing. Contact the State of Connecticut for a list of certified individuals. More information is available from the EPA.

Short-term radon tests generally remain in the home from two to 90 days, and many are charcoal activated. If you need results quickly, a short-term test followed by a second short-term test can give you better results. Long-term tests give you a better idea of your year-round average radon level. These tests remain in the home for more than 90 days, and "alpha track" or "electrets" detectors are commonly used.

A variety of methods can be used to lower radon in the home. Sealing cracks in floors and walls may help reduce radon. Simple systems using pipes and fans may be used, as well. Such systems are called "sub-slab depressurization," and do not require major changes in the home. These systems remove radon gas from below the concrete floor and the foundation before it can enter the home.