Radon Levels in Atlanta

Below the EPA's recommended action level. However, there is no completely safe level of radon.

Below EPA action level but the EPA recommends considering mitigation. Many choose to mitigate at these levels.

Above EPA's action level of 4.0 pCi/L. The EPA recommends fixing homes at or above this level.

Significantly elevated levels that should be addressed. Some homes test at 20+ pCi/L in high-risk areas.

What is the EPA action level for radon?

The EPA recommends taking action to reduce radon levels at or above 4.0 pCi/L. However, they also recommend considering mitigation for levels between 2 and 4 pCi/L. There is no known safe level of radon.

What is the average radon level in Atlanta?

Average levels in Metro Atlanta counties typically range from 3.5 to 5.5 pCi/L based on available data. However, individual homes can vary significantly—some test well below 2.0 pCi/L while others exceed 10 pCi/L.

Can radon levels change over time?

Yes. Radon levels can fluctuate due to seasonal changes, home renovations, changes in ventilation patterns, and other factors. The EPA recommends retesting every 2 years.

Why do neighboring homes have different radon levels?

Radon entry depends on many factors including foundation type, soil conditions, cracks and openings, and air pressure differences. Two similar homes next door can have very different radon levels.

How do I know my home's radon level?

The only way to know your home's radon level is to test. Radon is an odorless, colorless gas that cannot be detected without testing equipment.

What radon level can mitigation achieve?

Mitigation can typically reduce radon levels significantly. Many mitigated homes achieve levels below 2.0 pCi/L. Results depend on the home and system design.