Radon is a colorless, odorless radioactive gas that can seep into your home through cracks in the foundation, gaps in flooring, and even through well water. It’s the second leading cause of lung cancer in the United States—making it a serious concern for homeowners across South Carolina, especially in areas like Greenville, Columbia, and Charleston, where radon levels can vary from one neighborhood to the next.
But how do you know if you need radon mitigation in your home? Below are the most common signs—and why it’s important to take action.
1. Your Radon Test Came Back at 4.0 pCi/L or Higher
The Environmental Protection Agency (EPA) recommends installing a radon mitigation system in any home that tests at or above 4.0 picocuries per liter (pCi/L). Even levels between 2.0 and 4.0 pCi/L can pose long-term health risks and may still warrant mitigation, especially if someone in the home has preexisting health conditions.
If you’ve had your home tested—either with a DIY kit or a professional radon inspection—and your levels are above the EPA’s recommended threshold, it’s time to take action.
2. You’ve Never Had Your Home Professionally Tested
One of the biggest challenges with radon is that you won’t see or smell it. If you live in Greenville, Columbia, or Charleston and haven’t had a professional radon test performed, you may be at risk without knowing it.
Many South Carolina homes—both old and new—can have elevated radon levels due to the natural composition of the soil in this region. If you’ve never had your home tested, it’s impossible to know whether mitigation is needed.
3. You Live in a High-Risk Radon Area
Parts of South Carolina are located in EPA Radon Zone 1, meaning the potential for elevated radon levels is high. Even if your neighbor’s home tested low, that doesn’t guarantee your home is safe. Radon levels can vary significantly from one house to the next, even on the same street.
If you’re in a known high-radon zone and your home hasn’t been tested recently, it’s a good idea to schedule a test and prepare for mitigation if needed.
4. Your Home Has a Basement or Crawl Space
Homes with basements and crawl spaces are more susceptible to radon infiltration. These lower areas are closer to the ground, where radon originates, and can trap gas that seeps in through cracks or unsealed areas.
If your home has one of these features and especially if you’ve had moisture or foundation issues, radon mitigation may be necessary to keep your indoor air safe.
5. You’re Buying or Selling a Home
Radon testing is a common part of real estate transactions—and for good reason. If you’re buying or selling a home in South Carolina, especially in Greenville, Columbia, or Charleston, a failed radon test can delay the process or even affect the sale price.
Installing a radon mitigation system before listing your home—or as soon as high levels are discovered—can give both buyers and sellers peace of mind.
6. Someone in Your Household Has Breathing Issues
Radon exposure doesn’t always cause immediate symptoms, but for people with asthma, COPD, or other respiratory conditions, it can aggravate symptoms and contribute to long-term lung problems.
If someone in your home is already vulnerable, it’s especially important to ensure radon levels are low—and take steps to mitigate if they aren’t.
Team GRS: Your Local Radon Mitigation Experts
If you’ve noticed any of the signs above or simply want peace of mind, Team GRS is here to help. We provide professional radon testing and custom mitigation solutions designed to keep your family safe.
As a local, family-owned business serving Greenville, Columbia, and Charleston, we understand the unique radon risks in South Carolina and take pride in offering fast, honest, and affordable service.
Don’t wait for radon to become a bigger problem. Call Team GRS today at 864-416-1721 to schedule your radon test or speak with a specialist about mitigation options. Let us help you protect what matters most—your health and your home.