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*The Angi rating for Radon Detection And Reduction companies in Swansea, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Swansea, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on August 10, 2026

Top-Rated Radon detection and reduction specialists in Swansea - Updated Nov 2026

Avatar for Scope Environmental
Scope Environmental
5.0(
15
)
Radon Gas - Testing

Serving Swansea, IL and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

"TESTING FOR ASBESTOS I need to make sure people know about a man named Jeff Miller Owner of Scope Environmental. I wanted to have my basement checked for Asbestos. This man was absolutely the nicest person. Jeff is a professional, who explained things extremely well and in detail, offered positives suggestions, and extremely knowledgeable. Oh, and extremely honest and helpful. If you ever want to have your basement checked for Radon or Asbestos or Mold, please call this nice man who has a vast amount of experience and knowledge on these three issues. His phone number is 314-220-1810. His pricing is very reasonable and he is Certified in the State of Missouri which is a requirement by the State to do testing. He sure put my mind at peace."
Black mold inside closet
Mold growth in HVAC Closet
Asbestos Flooring
Floor sample collection
Asbestos Adhesive

+10

Response time4 hrs
Response rate96%
Recommended by73%of homeowners
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Avatar for Loving Mold Removal
Loving Mold Removal
4.6(
26
)
Radon Gas - Testing

Serving Swansea, IL and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"We were in the depths of nesting when we realized we were running out of time to paint the nursery before our first baby arrived. We live in an older house, so we were quite concerned about lead safety as well as minimizing paint fume exposure for my wife and newborn. We realized we needed to work with a professional who could take all of this into account and act quickly to make sure the room was ready in time. Kenneth was very accommodating to us. I'm confident we were challenging to work with given the circumstances, but he never made us feel that way. He took our concerns seriously and talked us through a variety of options to find something that worked for us. He was kind, responsive, and moved quickly to keep us on schedule. When we had notes or changes, he was quick to address them. There were a few aspects of the finish that weren't as polished as we hoped, but overall he was great to work with. The project was completed on time, and we were grateful to have his help during such a stressful moment."
Mold Testing and Remediation Project
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+43

Recommended by87%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

The Swansea, IL homeowners’ guide to radon detection and reduction services

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