Family-owned radon specialists in West Allis, WI
Radon Mitigation in Milwaukee, WI From a Certified Local Specialist
Milwaukee Radon Mitigation tests homes for radon and installs mitigation systems that bring high levels down, across 19 communities in Greater Milwaukee. You work directly with owner Brian Thompson, an NRPP-certified radon measurement and mitigation professional who explains your numbers in plain English and gives you a fair, upfront quote.
- NRPP Certified (Measurement & Mitigation)
- 5.0 Google Rating (40+ Reviews)
- 10+ Years of Radon Work
- Lifetime Workmanship Warranty
Milwaukee Radon Mitigation tests homes for radon and installs mitigation systems that bring high levels down, across 19 communities in Greater Milwaukee. You work directly with owner Brian Thompson, an NRPP-certified radon measurement and mitigation professional who explains your numbers in plain English and gives you a fair, upfront quote.
Who handles radon mitigation in Milwaukee?
Milwaukee Radon Mitigation, at 6301 W National Ave in West Allis, WI, tests and fixes radon in homes and businesses across Milwaukee, Waukesha and Ozaukee counties. Owner Brian Thompson is an NRPP-certified radon measurement and mitigation professional with 10+ years of radon work. Most homes are fixed with active sub-slab depressurization, which brings levels below the EPA action level of 4.0 pCi/L.
Reviews From Milwaukee-Area Homeowners
Hear from customers who’ve worked with Milwaukee Radon Mitigation.
Meet Brian Thompson, Your Local Radon Mitigator
Milwaukee Radon Mitigation is a family-owned business run out of West Allis, right on Milwaukee’s western border. When you call, you talk to Brian Thompson, the owner and the certified specialist who tests your home, designs your system and installs it himself. There is no crew; Brian does every test and install.
Brian is an NRPP-certified radon measurement and mitigation professional (NRPP is the AARST-affiliated National Radon Proficiency Program) with 10+ years of radon work. That training shapes every job: where the suction point goes, how the pipe is routed, how cracks and the sump are sealed, and how the result is verified.
Homeowners mention the same things in their reviews. Brian shows up on time, explains how the system works, leaves the basement cleaner than he found it, and does not push extras you don’t need. As one customer put it, “he didn’t try to upsell but rather was genuine and honest.”
That is the standard: honest advice, careful work and numbers you can check.
10+
Years of Radon Work
5.0
Google Rating
40+
Google Reviews
Milwaukee Radon Mitigation and Testing Services
Test first, then fix only if the numbers call for it. From the first test to the finished system and its follow-up test, Brian handles every job himself.
Radon Testing
Find out what you are breathing. We run at least a 48-hour test with a professional continuous radon monitor, with results right after and a written report that explains what the numbers mean.
Radon Mitigation
A properly sized sub-slab depressurization system, routed neatly and sealed carefully, built to bring your radon level below 4.0 pCi/L and keep it there.
Radon Resistant New Construction
Building in the Milwaukee area? Passive radon piping installed during construction is the easiest time to plan for radon, and a fan can be added later.
Radon Fan Replacement
Fan quiet, failing or dead? We replace radon fans on any system, check the piping and seals, and confirm the system is pulling suction again.
Radon System Inspection
Bought a house with a system already in it? We check the fan, manometer, venting and seals, then tell you honestly whether it is doing its job.
Vapor Intrusion Mitigation
For commercial and industrial properties where soil vapors threaten indoor air, we design and install sub-slab systems that keep vapors out of occupied space, working alongside your environmental consultant.
Radon Testing and Mitigation for Homes, Rentals and Businesses
Every radon project starts the same way: test first, then fix only if the numbers call for it. Radon comes up from the soil and can collect in any Milwaukee building, old or new, with a basement or a slab.
Homes and rentals
Most of our work is in single-family homes with basements. A short professional test tells you whether you are at or above the EPA action level of 4.0 pCi/L. If you are, a sub-slab system draws the gas from under the floor and vents it above the roofline. Landlords get the same process, with results documented for tenants.
Commercial buildings and daycares
We test and mitigate offices, retail space, multifamily buildings, condo associations, schools and child care centers, with a test plan sized to the building and after-hours visits when needed. Since March 2023, Wisconsin DCF requires licensed child care providers to test for radon and mitigate above the action level.
Not Sure Where Your Radon Level Stands?
A test is the only way to know. Book one today and get a straight answer.
Why Choose Milwaukee Radon Mitigation Services?
With over a decade of specialized experience and thousands of successful installations, Milwaukee Radon Mitigation delivers industry-leading radon testing and mitigation backed by certified expertise, clean workmanship, and unmatched customer care. Homeowners, real estate professionals, and businesses across Milwaukee trust us because we do the job right — every time.
Below are the core advantages that set Milwaukee Radon Mitigation apart from other radon contractors in Wisconsin:
Certified Radon Technicians
Customer-First Service
More than 90% of Wisconsin homeowners are unaware of their radon levels — until they test. Our goal is to provide honest education, not pressure.
Safety-Driven System Design
Our 4-Step Radon Mitigation Process
A safe home starts with a clear process: test, quote, install, then test again so you can see the result yourself.
Test or Review Your Results
We place a professional continuous radon monitor for at least 48 hours, usually within a few days of your call, or review a recent test you already have, such as one from a home inspection.
Free Quote and System Design
Brian looks at your foundation, sump and layout, then explains where the suction point and pipe will go and what it will cost.
Professional Installation
We core the slab, seal cracks and the sump, run the pipe, install the fan and add a pressure gauge (manometer) that shows the system is running. A standard install takes about 4 hours.
Post-Mitigation Test
A follow-up test is included with every install. Brian runs it, or pays for a third-party lab test, no sooner than 24 hours and no later than 30 days after installation, to verify your level dropped below 4.0 pCi/L. Then he explains how to keep an eye on the system.
Test or Review Your Results
We place a professional continuous radon monitor for at least 48 hours, usually within a few days of your call, or review a recent test you already have, such as one from a home inspection.
Free Quote and System Design
Brian looks at your foundation, sump and layout, then explains where the suction point and pipe will go and what it will cost.
Professional Installation
We core the slab, seal cracks and the sump, run the pipe, install the fan and add a pressure gauge (manometer) that shows the system is running. A standard install takes about 4 hours.
Post-Mitigation Test
A follow-up test is included with every install. Brian runs it, or pays for a third-party lab test, no sooner than 24 hours and no later than 30 days after installation, to verify your level dropped below 4.0 pCi/L. Then he explains how to keep an eye on the system.
Real Before-and-After Radon Results
The goal of every system is simple: a lower number on the follow-up test. In Brian’s experience, typical post-mitigation results are below 2.0 pCi/L, with more than 90% of homes below 1.0 pCi/L. Here is what two recent customers reported in their Google reviews.
Andrew S.
9.5 → 0.30
pCi/L before → after (peaking near 10 before). A follow-up test confirmed the drop.
Steve L.
7.1 → 1.1
pCi/L before → after. Brian arrived on time, explained everything and left the work area spotless.
Recent Radon Mitigation Projects Around Milwaukee
See how our systems look once they are in: neat pipe runs, sealed sumps and fans mounted outside the living space.
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.
6301 West National Avenue West Allis, WI 53214
Radon Mitigation in Milwaukee: Common Questions
Who installs radon mitigation systems in Milwaukee?
Radon systems in Milwaukee should be installed by a certified radon mitigation professional. Milwaukee Radon Mitigation is owned by Brian Thompson, an NRPP-certified radon measurement and mitigation professional based in West Allis with 10+ years of radon work. He tests, designs and installs every system himself across Greater Milwaukee. You can check any contractor’s credentials (Brian’s are 109591-RMP and 109619-RMS) on the NRPP website before you hire.
Is radon common in Milwaukee?
Yes, radon is a real concern here. The Wisconsin Department of Health Services estimates that about 1 in 10 Wisconsin homes has high radon levels, and homes in Milwaukee County are no exception. Two houses on the same block can test very differently, so a test is the only way to know your level. See Wisconsin DHS radon information.
What is the radon level in Milwaukee?
There is no single radon level for Milwaukee. Levels vary from house to house depending on soil, foundation and how the home is sealed, even between next-door neighbors. Wisconsin DHS publishes test results by area, which show trends, but your own test result is the only number that matters for your home.
Do all houses need radon mitigation?
No. The EPA recommends fixing a home when a test shows radon at or above 4.0 pCi/L, and suggests considering it between 2 and 4 pCi/L. Many Milwaukee homes test below the action level and need nothing. That is why we test first and only quote a system when the numbers call for one.
Do plumbers install radon mitigation systems?
Some general contractors and plumbers offer radon work, but a radon system is its own specialty. Suction point placement, fan sizing, sealing and exhaust location all affect whether it works and meets standards. Wisconsin DHS recommends using a certified radon professional, such as an NRPP-certified mitigator like Brian Thompson.
