The following charts compare the risk of lung cancer due to radon with the risk of dying of other causes.
If you are a smoker, refer to the first chart below. Non-smokers refer to the second chart.
Source: EPA publication 6604J "Air and Radiation"
| Radon Level |
Out of 1000 smokers... |
Out of 1000 Never Smokers |
What To Do |
| 20 pCi/L |
about 260 people could get lung cancer |
about 36 people could get lung cancer |
EPA recommends mitigation |
| 10 pCi/L |
about 150 people could get lung cancer |
about 18 people could get lung cancer |
EPA recommends mitigation |
| 8 pCi/L |
120 people could get lung cancer |
about 15 people could get lung cancer |
EPA recommends mitigation |
| 4 pCi/L |
62 people could get lung cancer |
about 7.3 people could get lung cancer |
Mitigation |
| 2 pCi/L |
32 people could get lung cancer |
about 3.7 people could get lung cancer |
consider mitigation between 2 and 4 pCi/L |
| 1.25 pCi/L |
about 20 people could get lung cancer |
about 2.3 people could get lung cancer |
reducing levels below 2 pCi/L is difficult |
| 0.4 pCi/L |
about 0.64 people could get lung cancer |
about 0.07 people could get lung cancer |
| Assumes constant lifetime exposure in homes at these levels. |