Radon is responsible for over 21,000 lung cancer deaths every year as well as numerous upper respiratory illnesses. No level of indoor radon is safe, making radon a serious concern for many homes and businesses in the Southwest. The majority of people often cite the EPA Map of Radon Zones, which was developed to identify indoor radon levels of the counties across the US, measured in picocuries per liter (pCi/L):
- Radon Zone 1 indicates the highest levels of radon, averaging over 4 pCi/L
- Radon Zone 2 indicates a moderate level of radon, averaging between 2 pCi/L and 4pCi/L
- Radon Zone 3 indicates the lowest levels of radon, averaging below 2 pCi/L
While the EPA’s maps are a beneficial tool to help understand whether your home is at risk for indoor radon, they are not perfect. As they are based on average test results, their data can be greatly skewed by several high or low readings. Though the Southwest’s overall average indoor radon levels tend to be in the mid to high end of Zone 2, there are numerous counties, particularly those of metropolitan areas, that have dangerously high levels well above the EPA’s action level.
While overall reported radon levels are not as high as other regions, there are several counties across the Southwest that are radon hotspots. Radon levels can drastically vary and change over time. As such, even though state averages might be lower than other states, individual counties and even properties can show radon levels well into the upper ends of Zone 1:
Regardless of whether you’re in Texas or Colorado, indoor radon exposure should not be taken lightly which is why it is imperative you have your home or business professionally tested and treated. For top-of-the-line professional radon testing and mitigation services, contact our NRPP licensed and certified radon professionals.