Gwinnett County Radon Level Analysis

Your Gwinnett Home May Be at Risk

With nearly 1 in 3 tested homes showing radon above the EPA action level, Gwinnett County homeowners face significant radon risk. Whether you live in Lawrenceville, Duluth, Suwanee, Buford, or any other Gwinnett community, professional radon testing is the only way to know if your family is being exposed to dangerous radon levels.

Gwinnett's Rapid Growth and Older Housing Stock

Gwinnett County experienced explosive growth from the 1970s through the 2000s, resulting in a mix of older homes built without radon-resistant construction techniques and newer developments that may still have radon issues. The study found that older homes (built before 1990) showed higher average radon levels, but even newer homes can have elevated radon if built on radon-producing soil.

Geological Factors in Gwinnett County

Gwinnett County sits on varied geology, including granite bedrock, gneiss formations, and weathered soil that can produce radon gas. Areas in northern Gwinnett near the foothills showed slightly higher radon prevalence, but radon was found throughout the county. The UGA Extension study confirmed that radon risk exists everywhere in Gwinnett—not just specific zones.

Foundation Types Common in Gwinnett

The study found that basement and crawl space homes—common in many established Gwinnett neighborhoods— tested higher for radon than slab-on-grade homes. Basements and crawl spaces provide large surface areas for radon entry through cracks, gaps, and exposed soil. If your Gwinnett home has a basement or crawl space, testing is especially important.

Real Estate Implications

Gwinnett County's hot real estate market means homes change hands frequently. The UGA Extension research emphasized that radon testing should be part of every home purchase or sale in Gwinnett. Buyers deserve to know radon levels before closing, and sellers can increase home value by proactively testing and mitigating if necessary.

Test Your Gwinnett Home Now

The UGA Extension study confirmed that radon is a real concern throughout Gwinnett County. Testing is quick, affordable, and the only way to know your home's radon level.

• Professional testing provides lab-certified results you can trust
• Test the lowest lived-in level (basement if you have one)
• Cold weather testing (November-March) provides the most accurate results
• Retest every 2 years or after major renovations or foundation work

Understand Your Test Results

Interpreting your radon test results correctly is critical:

• Below 2.0 pCi/L: Low risk, but retest periodically
• 2.0-4.0 pCi/L: Elevated—consider mitigation to reduce exposure
• Above 4.0 pCi/L: EPA action level—professional mitigation recommended
• Above 10.0 pCi/L: High risk—immediate mitigation required

Remember: 30% of tested Gwinnett homes exceeded 4.0 pCi/L, so there's a real chance your home needs mitigation.

Install Professional Radon Mitigation

If your test shows radon above 4.0 pCi/L, our certified radon mitigation systems reduce radon by up to 99%. We specialize in Gwinnett County homes and understand the unique construction and geological challenges of the area.

• Sub-slab depressurization for slab and basement homes
• Crawl space encapsulation and ventilation systems
• Sump pump sealing and radon barrier installation
• Post-mitigation testing to verify effectiveness

Real Estate Considerations

If you're buying or selling a home in Gwinnett County, include radon testing in your transaction. Buyers should request testing during inspections, and sellers can add value by testing proactively and providing documentation of low radon levels or successful mitigation.