How to Reduce Radon in Fort Worth Homes

Radon is a colorless, odorless, and tasteless radioactive gas that forms naturally from the decay of uranium in soil, rock, and water. It seeps into buildings through cracks in foundations, gaps around pipes, sump pits, and other openings, accumulating to dangerous levels indoors. In Fort Worth, Texas, and across the broader North Texas region, radon levels are among the highest in the state due to the underlying geology—particularly the presence of uranium-rich limestone and shale formations. According to the U.S. Environmental Protection Agency (EPA), nearly 1 in 3 homes in Texas have elevated radon levels, and Tarrant County, where Fort Worth is located, consistently ranks in the top 10% of counties nationwide for radon potential.

Long-term exposure to elevated radon levels is the second leading cause of lung cancer in the United States, responsible for approximately 21,000 deaths annually, according to the CDC. For Fort Worth residents, this is not a distant concern—it’s a household risk. Many homeowners assume radon is only a problem in basements or older homes, but in reality, any home in Fort Worth—whether it’s a 1950s bungalow, a modern suburban build, or a high-rise apartment—can have dangerous radon concentrations. The good news? Radon is entirely preventable. With proper testing, mitigation techniques, and ongoing monitoring, you can significantly reduce radon levels and protect your family’s health.

This comprehensive guide walks you through exactly how to reduce radon in Fort Worth homes. From understanding local geology and testing protocols to installing proven mitigation systems and maintaining long-term safety, you’ll learn actionable, science-backed strategies tailored to the unique environmental conditions of North Texas. Whether you’re a new homeowner, a landlord managing rental properties, or a concerned resident, this guide gives you the tools to make your home safer today.

Step-by-Step Guide

Step 1: Test Your Home for Radon

The first and most critical step in reducing radon is testing. You cannot detect radon without a measurement device. There are two primary types of radon tests: short-term and long-term.

Short-term tests last between 2 and 90 days and are ideal for initial screening. They include charcoal canisters, alpha-track detectors, and continuous electronic monitors. For Fort Worth homeowners, the EPA recommends starting with a short-term test during the heating season (November–February), when homes are more tightly sealed and radon levels are typically highest.

Long-term tests, which last more than 90 days, provide a more accurate annual average of radon exposure. These are especially useful if you’re planning to sell your home or want to verify the effectiveness of a mitigation system. Alpha-track and electret ion detectors are common long-term options.

Test kits can be purchased online from certified vendors such as the National Radon Program Services (through Kansas State University) or local hardware stores like Home Depot and Lowe’s. Alternatively, hire a certified radon measurement professional through the Texas Department of Health and Human Services or the National Radon Proficiency Program (NRPP). Ensure the tester follows EPA protocols: place the device in the lowest lived-in level of your home (e.g., basement if used regularly, otherwise ground floor), away from drafts, high humidity, and exterior walls. Keep windows and doors closed for at least 12 hours before and during the test.

Step 2: Interpret Your Results

The EPA action level for radon is 4 picocuries per liter (pCi/L). If your test result is at or above this level, mitigation is strongly recommended. Even levels between 2 and 4 pCi/L pose a risk, and the EPA encourages homeowners to consider mitigation in this range, especially if children or smokers live in the home.

In Fort Worth, average radon levels range from 4 to 8 pCi/L, with some homes exceeding 20 pCi/L. If your result is above 4 pCi/L, do not delay. Radon exposure is cumulative, and the longer you’re exposed, the greater your risk. Even if your neighbor’s home tested low, your home’s unique foundation, soil composition, and ventilation can create entirely different conditions. Each home must be tested individually.

Step 3: Hire a Certified Radon Mitigation Professional

While DIY radon reduction methods exist, they are rarely effective and often unsafe. Radon mitigation requires specialized knowledge of soil gas dynamics, building construction, and ventilation systems. In Texas, radon mitigation professionals must be certified by either the NRPP or the National Radon Safety Board (NRSB). You can verify a contractor’s credentials on the NRPP website or through the Texas Department of State Health Services.

When selecting a contractor, ask for:

• Proof of current certification
• References from past clients in Tarrant County
• A written proposal detailing the system design, materials, and warranty
• Proof of liability insurance

Reputable contractors will conduct a site assessment before providing an estimate. They’ll inspect your foundation, crawl space, sump pit, and ventilation pathways to determine the best mitigation approach for your home’s structure.

Step 4: Install an Active Soil Depressurization (ASD) System

The most effective and widely used method for reducing radon in Fort Worth homes is an Active Soil Depressurization (ASD) system. This system works by creating a vacuum beneath the foundation to draw radon gas out before it enters the home, then safely venting it above the roofline where it dissipates harmlessly into the atmosphere.

There are three common types of ASD systems:

Sub-Slab Depressurization (SSD)

This is the most common type for homes with concrete slab foundations, which is typical in Fort Worth’s newer construction. A 3- to 4-inch PVC pipe is inserted through the slab into the crushed rock or soil beneath. A specially designed in-line fan, mounted outside the living space (typically in the attic or outside the home), runs continuously to pull radon from beneath the slab. The gas is then exhausted above the roofline.

Crawl Space Depressurization

For homes with crawl spaces, a high-density plastic membrane is sealed over the soil floor, and a vent pipe and fan are installed to draw radon from beneath the membrane. This method is often combined with sealing cracks and gaps in the crawl space walls.

Sump Hole Depressurization

If your home has a sump pit, it can be used as a natural collection point for radon. A sealed cover is installed over the sump, and a vent pipe is connected to a fan that pulls radon out through the pipe. This is a cost-effective option when the sump is properly sealed and the system is designed to handle the volume of gas.

After installation, the contractor will conduct a post-mitigation test to confirm radon levels have dropped below 2 pCi/L. Most systems reduce radon by 80–99%. The fan typically runs 24/7 and consumes minimal electricity—about the same as a 60-watt light bulb.

Step 5: Seal Entry Points

While sealing alone is not sufficient to reduce high radon levels, it enhances the effectiveness of an ASD system. Seal cracks in concrete floors and walls, gaps around utility penetrations (pipes, wires, sump pumps), and openings in foundation joints using polyurethane caulk or hydraulic cement. In crawl spaces, seal all perimeter joints and cover exposed soil with a 6-mil or thicker polyethylene vapor barrier, overlapping seams by at least 12 inches and sealing with tape designed for radon mitigation.

Be cautious not to over-seal your home. While reducing radon entry is critical, proper ventilation remains essential to prevent moisture buildup and indoor air quality issues. Always work with a professional who understands the balance between sealing and ventilation.

Step 6: Install a Radon Monitor

After mitigation, install a digital radon monitor to provide real-time readings. Devices like the Airthings Wave Plus or RadonEye offer continuous monitoring, alerting you via smartphone app if levels rise. These are especially useful in Fort Worth, where seasonal changes—such as extreme heat in summer or cold fronts in winter—can affect soil pressure and radon flow. Place the monitor in the lowest occupied level, away from windows and vents, and check readings monthly for the first year after mitigation.

Step 7: Maintain and Re-Test Regularly

Radon mitigation systems require minimal maintenance but should be inspected annually. Check the fan’s power indicator, ensure the vent pipe is unobstructed, and look for signs of damage or disconnection. Replace the fan every 5–10 years, depending on usage and manufacturer recommendations.

Re-test your home every two years, even if levels were initially low. Soil conditions, home renovations, or changes in HVAC systems can affect radon entry points. If you’ve added a new room, finished a basement, or installed a new sump pump, re-test immediately.

Best Practices

Test Before You Buy or Build

If you’re purchasing a home in Fort Worth, make radon testing a mandatory part of your home inspection. Request a recent test result from the seller, but if it’s older than six months or was conducted during a season of low radon potential (summer), conduct your own test. In new construction, insist on radon-resistant features being installed during the building phase. These include a 4-inch layer of clean gravel beneath the slab, a plastic membrane over the gravel, a vent pipe stubbed through the slab, and a junction box for future fan installation. These features cost under $500 to install during construction but can cost $1,500–$2,500 to retrofit later.

Use Radon-Resistant New Construction (RRNC) Techniques

Fort Worth’s rapid housing growth means many new homes are being built without radon protection. If you’re building or renovating, work with your builder to incorporate RRNC standards. This includes passive venting systems, sealed foundation joints, and gas-permeable layers under slabs. Adding a fan later is simple and inexpensive if you’ve pre-installed the wiring and pipe.

Don’t Rely on Air Purifiers or Open Windows

Many homeowners mistakenly believe that opening windows or using air purifiers will reduce radon. While increased ventilation can temporarily lower radon levels, it’s not a reliable solution. In Fort Worth’s hot, humid climate, keeping windows open year-round is impractical and increases energy costs. Air purifiers with HEPA filters capture particles, not gases like radon. Only a properly installed ASD system provides consistent, long-term protection.

Consider Radon Levels When Renovating

Home renovations—especially those involving basements, foundations, or plumbing—can disturb soil gas pathways and increase radon entry. If you’re finishing a basement or adding an extension, test before and after construction. Install or upgrade your mitigation system as part of the renovation project to avoid future exposure.

Inform Tenants and Family Members

If you rent out property, provide tenants with radon test results and documentation of any mitigation systems. Educate family members about radon risks and the importance of ongoing monitoring. Children and elderly individuals are more vulnerable to radon’s effects due to higher respiration rates and longer life expectancy for potential cancer development.

Stay Informed About Local Trends

Fort Worth’s geology varies across neighborhoods. Areas near the Trinity River, such as the western edges of the city and parts of North Richland Hills, have higher uranium content in the soil and correspondingly higher radon potential. Consult the EPA’s Radon Zone Map and the Texas Radon Information Database to understand your neighborhood’s risk level. Use this data to prioritize testing and mitigation.

Tools and Resources

Recommended Radon Test Kits

• ProLab 5000 Radon Test Kit – EPA-approved, easy to use, includes prepaid lab analysis.
• AirThings View Plus – Digital monitor with real-time readings, historical data, and mobile alerts.
• RadonEye RD200 – Professional-grade continuous monitor with high accuracy and USB data export.
• Safe Home Radon Test Kit – Affordable short-term charcoal canister kit with fast lab turnaround.

Professional Certification Directories

• National Radon Proficiency Program (NRPP) – nrpp.info – Search for certified testers and mitigators in Texas.
• National Radon Safety Board (NRSB) – nrsb.org – Another trusted certification body for radon professionals.
• Texas Department of State Health Services (DSHS) – dshs.texas.gov – Offers radon program resources and a list of state-registered contractors.

Government and Educational Resources

• EPA Radon Website – epa.gov/radon – Comprehensive guides, maps, and technical manuals.
• American Lung Association – Radon Resources – lung.org – Educational materials and advocacy tools.
• Kansas State University National Radon Program Services – radon.k-state.edu – Offers low-cost test kits and expert advice.

Local Fort Worth Resources

• Tarrant County Public Health – Offers free radon education workshops and discounted test kits for residents.
• Fort Worth Home Builders Association – Can connect you with builders experienced in radon-resistant construction.
• North Texas Radon Network – A community group that hosts annual radon awareness events and provides free home testing events.

Cost Estimates for Mitigation

Radon mitigation in Fort Worth typically costs between $1,200 and $2,500, depending on home size, foundation type, and system complexity. Sub-slab depressurization averages $1,500–$2,000. Crawl space systems may cost $1,800–$2,500. If your home requires multiple suction points or additional sealing, costs may rise slightly. Compare quotes from at least three certified contractors. Many systems come with 5–10 year warranties on components and performance.

Real Examples

Case Study 1: The Smith Family – Single-Story Ranch in South Fort Worth

The Smiths purchased a 1978 ranch-style home in the Keller area of South Fort Worth. During a routine home inspection, a short-term radon test revealed a level of 9.8 pCi/L. Concerned about their two young children, they immediately contacted a certified mitigator. The contractor installed a sub-slab depressurization system using a 4-inch PVC pipe through the garage slab, connected to a quiet, energy-efficient fan mounted in the attic. The system included a manometer (pressure gauge) to visually confirm operation. Post-mitigation testing showed levels had dropped to 0.7 pCi/L. The Smiths now use an Airthings monitor and re-test annually. They credit the system with peace of mind and significantly reduced health risks.

Case Study 2: The Rivera Apartment Complex – Multi-Unit Building in North Fort Worth

A property manager overseeing a 12-unit apartment complex in the Lake Worth area noticed that two tenants had reported health concerns linked to respiratory issues. Testing revealed radon levels above 12 pCi/L in the ground-floor units. Since the building had a crawl space foundation, the manager hired a professional to install a crawl space depressurization system with a single fan serving all units via a shared vent stack. Each unit was sealed at floor-wall junctions, and a plastic membrane was laid over the entire crawl space. After retrofitting, average levels dropped to 1.2 pCi/L. The manager now includes radon test results in tenant disclosures and requires biannual monitoring.

Case Study 3: New Construction – Modern Home in Grapevine (Near Fort Worth)

A family commissioned a custom home in Grapevine with radon-resistant construction features from the start. The builder incorporated a 6-inch gravel layer under the slab, a vapor barrier, a 4-inch vent pipe stubbed through the slab, and a junction box for future fan installation. The family chose to install the fan immediately for added safety. Post-construction testing showed radon levels at 0.4 pCi/L. The homeowner estimates they saved over $1,800 compared to retrofitting a similar system later. They now recommend RRNC to all friends building homes in the area.

Case Study 4: The Hendersons – High Radon in a Finished Basement

The Hendersons finished their basement as a home theater and gym. After installing new flooring and drywall, they noticed persistent headaches and fatigue. A radon test revealed levels of 22 pCi/L—the highest recorded in their neighborhood that year. The mitigation professional discovered that the basement’s concrete floor had been poured over unsealed soil with no vapor barrier. They installed a sub-slab depressurization system through the garage slab (which connected to the basement soil) and sealed all cracks. Levels dropped to 0.9 pCi/L. The Hendersons now use the basement only with the fan running and monitor levels daily.

FAQs

Is radon really a problem in Fort Worth?

Yes. Fort Worth and surrounding areas in Tarrant County have some of the highest radon potential in Texas due to uranium-rich soil formations. The EPA classifies the entire region as Zone 1—the highest risk category. Nearly 40% of homes tested in North Texas exceed the EPA action level of 4 pCi/L.

Can I test for radon myself?

Yes, using EPA-approved test kits. However, for real estate transactions or if levels are high, hiring a certified professional ensures accurate, legally recognized results.

How long does radon mitigation take?

Most systems can be installed in 1–3 days. The fan installation and pipe routing are the most time-consuming parts. Post-installation testing is done immediately after setup.

Will radon mitigation lower my home’s value?

No. In fact, a properly installed and documented radon mitigation system can increase your home’s marketability. Buyers in high-risk areas like Fort Worth increasingly expect radon safety measures and may walk away from homes without proof of testing or mitigation.

Can I install a radon system myself?

Technically yes, but it’s not recommended. Improper installation can worsen radon levels or create moisture and backdrafting issues. Certified professionals understand soil dynamics and building codes specific to North Texas.

Does radon affect only basements?

No. Radon enters through any point where the home contacts the soil. Ground-floor rooms, crawl spaces, and even slab-on-grade homes without basements can have dangerous levels. In Fort Worth, most homes are slab-built, yet still have elevated radon.

Are new homes in Fort Worth required to have radon systems?

No. Texas does not mandate radon-resistant construction in new homes. However, builders who use RRNC techniques can market their homes as “radon-safe,” which is a growing selling point.

How often should I re-test after mitigation?

Every two years, or after any major renovation, change in HVAC system, or if you notice unusual symptoms like chronic cough or fatigue. Always test after installing a new sump pump or sealing foundation cracks.

Can radon enter through well water?

Yes, but it’s rare in Fort Worth. Most homes use municipal water, which is treated and tested. If you have a private well, test the water separately using a water-specific radon test kit.

Is radon mitigation noisy?

No. Modern fans are designed to be quiet—often quieter than a refrigerator. Most are installed in attics or outside living areas. You should not hear the system running.

Does insurance cover radon mitigation?

Homeowners insurance typically does not cover radon testing or mitigation, as it’s considered a preventive environmental measure. However, some real estate contracts may require sellers to pay for mitigation if levels are high.

Conclusion

Radon is not a hypothetical threat—it’s a silent, measurable, and entirely solvable danger in Fort Worth homes. With over 40% of homes in the region exceeding safe levels, ignoring radon is no longer an option. The steps outlined in this guide—from testing with certified kits, to hiring qualified professionals, to installing proven mitigation systems—are not just recommendations; they are essential actions for safeguarding your family’s long-term health.

The science is clear: radon exposure causes lung cancer. The solutions are proven: active soil depressurization reduces levels by 90% or more. The tools are accessible: affordable test kits, digital monitors, and certified contractors are available right here in North Texas. And the time to act is now.

Don’t wait for symptoms. Don’t assume your home is safe because it’s new, has no basement, or your neighbor tested low. Every home is different. Every family deserves peace of mind. By following this guide, you’re not just reducing radon—you’re investing in a healthier, safer future for everyone who breathes air in your home.

Test. Mitigate. Monitor. Repeat. That’s the cycle of radon safety in Fort Worth. Make it part of your homeownership routine, and you’ll never have to wonder if your home is truly safe.