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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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Additional Photos
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+43

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

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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.

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

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