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Last updated: April 2026
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Wisconsin Radon & Environmental, LLC

Milwaukee, WI
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(414) 477-6026 Visit Website

Wisconsin Radon & Environmental, LLC provides radon mitigation, radon testing and measurement, and VOC and vapor intrusion mitigation for residential and commercial property owners. Founder Jerome O’Callaghan remains involved in projects, including single-family mitigation and commercial vapor intrusion assessments. The company states it has operated for over 15 years in Southeast Wisconsin.

radon mitigation system installationradon testing and measurementvapor intrusion mitigationvoc mitigationmultifamily radon measurementradon mitigation in schools and large buildingscommercial radon services
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Credentials & Experience

Years of Experience
15+
Certifications
  • NRPP Certified
  • Radon Mitigation
  • Radon Measurement
  • Multifamily Radon Measurement

Coverage Area

Southeast Wisconsin, including Milwaukee, Waukesha, Ozaukee, Washington, Racine, and Kenosha counties, and communities south toward the Illinois border.

Additional Details

NRPP Certified Radon Mitigation Specialist
Yes
Years of Experience
15 years
Liability Insurance
Yes

Review Sentiment

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Insufficient review data available; only website navigation elements and headers provided without actual customer testimonials or ratings.

mitigationspecialistscustomersenvironmental

Review Highlights

"Hear What Our Customers Have To Say About Us"

"The Milwaukee Radon Mitigation Specialists"

Location

1155 N 21st St, Milwaukee, WI 53233

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