Reliable Radon Testing in Milwaukee, WI

Is radon testing protecting your indoor air from hidden exposure? Radon enters through foundations, drains, and soil, and the EPA ranks it as the second leading cause of lung cancer nationwide. Choose reliable, certified radon testing designed for Wisconsin homes and buildings.

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Why Should I Test for Radon?

Radon is a colorless, odorless radioactive gas that can cause lung cancer with long-term exposure. Testing is the only way to detect unsafe radon levels in your home or building. Southeast Wisconsin’s geology increases radon risk, especially in sealed homes during winter. Testing ensures your safety, helps comply with real estate requirements, and provides peace of mind. Early detection allows timely mitigation to protect your family’s health.
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What Are the Options for Radon Testing?

We provide both short-term and long-term radon testing solutions for accurate radon measurement, depending on your needs and property structure. Radon measurement can be conducted using approved devices such as charcoal canisters, alpha track detectors, or continuous radon monitors. You can purchase a radon test kit online or at many retail or hardware stores. You may choose to test for radon yourself with a test kit, or hire a contractor to conduct the test—especially for large or complex properties. A complete radon test involves following the recommended duration and placement guidelines for the chosen device.

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Short-Term Radon Testing (2–7 Days)

Ideal for:

 

  • Real estate closings
  • Home inspections
  • Quick decision-making

 

A short-term test typically lasts a minimum of 2 days and up to 90 days. Short-term kits measure radon for 2–90 days, providing quick results. If a short-term test shows 4 pCi/L or higher, a second test should be conducted to confirm the results. Mitigation is recommended if the average of the two results is 4 pCi/L or higher.



Our monitors measure radon hourly, giving an accurate snapshot of current conditions.

Best for:

 

  • Seasonal variation analysis
  • Identifying long-term exposure
  • Buildings with complex airflow patterns

 

A long term test lasts over 90 days and provides a more accurate assessment of annual radon in your home. Long-term kits measure radon in your home for over 90 days, offering a comprehensive evaluation compared to short-term testing. For the most accurate results, long-term tests should ideally include both heating and non-heating seasons, as radon levels can vary with seasonal changes and indoor heating periods, which impact ventilation and radon accumulation. 



Provides the most accurate average radon level over time.

  • Real-time data
  • Highly accurate results
  • Professional-grade equipment
  • Fast reporting

 

Whether you need immediate results or ongoing monitoring, we recommend the right method based on your situation.
Provides the most accurate average radon level over time.

Your home should be the safest place in your life — but in many Wisconsin neighbourhoods, radon levels are dangerously high. More than 1 in 3 homes in Wisconsin test above the EPA action level of 4.0 pCi/L. For comparison, the average radon level in American homes is about 1.3 pCi/L.

 

Our residential radon testing includes:

 

  • Full home evaluation
  • Placement of digital radon monitors
  • Hourly radon level tracking
  • Post-test analysis and recommendations
  • Guidance on mitigation if needed

 

For accurate results, radon tests should be placed on the lowest lived-in floor, ideally 2–7 feet above the floor and away from exterior walls. Testing should be conducted under closed building conditions, meaning windows and doors remain closed, to ensure reliable measurements.

 

We work with:

 

  • Homeowners
  • Home buyers
  • Sellers
  • Real estate agents
  • Property managers
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If your home has a basement, crawl space, or slab-on-grade foundation, you may be at higher risk — and testing is the first step toward safety. The type of home’s foundation can affect how radon enters and accumulates, so it’s important to consider this when interpreting test results.

Commercial buildings require specialized radon testing protocols to ensure compliance with Wisconsin safety standards and workplace health guidelines. For commercial properties, it is important that a licensed professional or contractor conduct radon testing using certified equipment to ensure accurate results and regulatory compliance. Hiring a contractor is more expensive, but it is often necessary for large or complex buildings to properly assess radon levels.

 

We serve:

 

  • Office buildings
  • Multi-family housing
  • Retail centers
  • Warehouses
  • Manufacturing facilities
  • Government buildings
  • Healthcare and assisted living centers

 

Our commercial radon testing includes:

 

  • Multi-zone testing
  • Large-property monitoring
  • Compliance-focused reporting
  • Recommendations for Radon Mitigation in commercial environments
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A safe building protects employees, customers, and long-term business stability.

Children breathe faster, absorb more radiation, and are more vulnerable to radon exposure than adults. Wisconsin requires licensed child care centers and certain schools to follow radon safety protocols.

 

Our daycare testing services deliver:

 

  • Certified measurement aligned with state guidelines
  • Testing during school/daycare operations
  • Safe, non-intrusive monitoring
  • Clear documentation for compliance

 

Facilities should use a qualified radon tester to ensure accurate results. Your state radon office can provide you with a list of approved radon testers. Additionally, some state radon offices may offer free or discounted radon test kits for schools and daycare centers to encourage testing and reduce barriers for administrators.

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Protecting children from radon exposure is essential — and testing is the most responsible step a facility can take.

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A High Radon Reading is No Reason to Panic

If your test results come back elevated, don’t worry — you’re not alone. Many Milwaukee homes test above the EPA action level, especially properties with basements or older foundations. The good news is that radon is 100% fixable with the right strategy.


 

A high reading simply means your radon testing company has identified a problem early, giving you the opportunity to take corrective action before it affects your health. Certified radon testing & mitigation specialists can reduce levels dramatically using proven systems that work for both residential and commercial buildings.

Brian Thompson

Is Your Living Space Safe from Radon Exposure?

Radon is invisible, odorless, and harmful, but the solution is simple, affordable, and fast. Brian Thompson and his certified team provide accurate testing, custom mitigation design, and documented post-testing results that prove your home is safe.

Reduce Your Radon Levels

Once radon is detected, reducing it quickly and effectively becomes the priority. This is where our radon testing services come in.


Our mitigation solutions include:

Active radon mitigation systems

Passive system upgrades

Radon fan installation & replacement

Sealing and foundation pressure adjustments

Commercial-grade radon reduction methods

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With the right approach, it’s possible to lower radon by 50–99%, creating a healthy indoor environment for your family, employees, or tenants.

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Active and Passive Radon Systems

Radon testing often identifies the need for a mitigation system. These systems are designed to reduce radon levels by either preventing radon from entering the building or by diluting indoor air with fresh outdoor air. The cost of a radon mitigation system typically ranges from $1,000 to $2,000, and can be affected by factors such as the severity of the radon leak and the size of the home. Sub-slab depressurization systems are the most effective solution for reducing radon levels. Understanding system types helps you plan effectively.

Active Radon Mitigation Systems

The industry standard for effective radon reduction.

 

  • Includes a radon fan that creates constant suction
  • Actively pulls radon out from beneath the foundation
  • Vents it safely outside
  • Achieves major reductions (often 50–99%)

 

After testing, our team recommends the most efficient system for long-term safety.

Passive Radon Systems

Installed in many new homes in Wisconsin.

 

  • No fan
  • Relies on natural pressure
  • Reduces radon but not always below EPA levels

 

Often requires an upgrade to active status.

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Our Radon Testing Process

Initial Consultation & Scheduling

We discuss your property type, concerns, and timeline, then schedule professional radon testing at a convenient time.

Continuous Radon Measurement

Our professional monitors measure radon levels over 2–7 days to ensure accurate, reliable readings.

Strategic Monitor Placement

Certified technicians place digital radon testing equipment in the lowest livable area, following EPA testing guidelines.

Detailed Reporting & Recommendations

You receive a clear report explaining your radon levels and next steps if mitigation is recommended.

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Initial Consultation & Scheduling

We discuss your property type, concerns, and timeline, then schedule professional radon testing at a convenient time.

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Strategic Monitor Placement

Certified technicians place digital radon testing equipment in the lowest livable area, following EPA testing guidelines.

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Continuous Radon Measurement

Our professional monitors measure radon levels over 2–7 days to ensure accurate, reliable readings.

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Detailed Reporting & Recommendations

You receive a clear report explaining your radon levels and next steps if mitigation is recommended.

Our Radon Services

Frequently Asked Questions

Still have questions?
Our team is available to provide clarity and additional information.
What is the acceptable radon level in Wisconsin?

Wisconsin follows the EPA guideline for radon safety. The EPA recommends taking action if indoor radon levels are 4.0 picocuries per liter (pCi/L) or higher. However, even levels between 2.0 and 4.0 pCi/L may pose health risks over long-term exposure. Because Wisconsin is a high-radon state, regular testing is strongly recommended.

No, air purifiers do not eliminate radon gas. Radon is a radioactive gas that comes from the ground, not airborne particles, so standard air purifiers cannot remove it. The only proven way to reduce radon is through a radon mitigation system that actively vents radon from beneath the building before it enters indoor spaces

Radon exposure does not cause immediate or noticeable symptoms. Long-term exposure increases the risk of lung cancer, often without warning signs. Symptoms, when they occur, may include chronic coughing, shortness of breath, chest pain, or frequent respiratory infections. Because symptoms appear late, testing is the only reliable way to detect radon risk.
Radon typically enters a home from the soil beneath the foundation. Common entry points include cracks in concrete floors, foundation walls, sump pits, crawl spaces, drain systems, and gaps around utility penetrations. Basements and slab-on-grade homes in Wisconsin are particularly susceptible.
Opening windows may temporarily lower radon levels by increasing ventilation, but it is not a reliable or long-term solution. Once windows are closed, radon levels usually rise again. Effective radon reduction requires a professionally installed mitigation system that continuously removes radon gas.
The cheapest option is a DIY radon test kit, which can provide a basic indication of radon presence. However, results can vary due to placement errors or environmental factors. For accurate, dependable results—especially in Wisconsin—professional radon testing is recommended, particularly for real estate or health-related decisions.

Radon won't wait, why should you?

Contact Milwaukee Radon Mitigation today for expert radon testing, mitigation, and system installation services in Milwaukee, WI. Ensure a healthy indoor environment for your family by reaching out to our certified professionals for reliable and efficient radon solutions.

Address

6301 West National Avenue West Allis, WI 53214

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