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Q: What would cause radon in a house?

• <div><p>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.</p></div>

Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

Q: How long does radon mitigation take?

• <div><p>Installation typically takes 1-2 days, depending on the system and property layout.</p></div>

Q: How is radon gas abatement professionally handled?

• <div><p>Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.</p></div>

Q: What if radon is still high after mitigation?

• <div><p>You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Williamsville, IL

*The Angi rating for Radon Detection And Reduction companies in Williamsville, 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 Williamsville, 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 June 13, 2026

Reviewed in June 2026
Lufkin Environmental Tree service, outstanding!!! Called to notify when they string , on time. The crew was quick , efficient, and safe. Cleanup, hauling away the tree very professional. Great to watch real professionals doing their job. Highly recommend and have them for future contact if...
Lufkin Environmental
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Reviewed in March 2025
Very professional job as Corey and his crew removed a tree and stump from my back yard. He also hauled in dirt and filled and leveled the hole where the stump was. Cleanup was excellent and price was very very reasonable. I highly recommend Corey and his company.
Sangamon County Stump Grinders and Tree Service
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Reviewed in March 2025
Luke Weatherby and his team did a great job removing 2 large trees from a small yard. Cleaned up after like they weren't here. Especially impressive was the tree climber who managed the large oak tree and brought it down without any damage to the 4 houses within reach of the tree. ...
Weatherby's Tree Service
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Reviewed in January 2025
The job was done perfectly. Very professional, very timely. Left the property clean and free of debris. Thank you Pro-Bid wonderful experience.
Pro Bid Roofing
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Reviewed in March 2024
Did very good work on a wooded deck construction. Punctual and reasonably priced.
Decked Out Landscaping
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Reviewed in September 2023
BCD Excavation took on the project of demolition and complete rebuild of my 36 x 48 garage and did an AMAZING job! They showed up when they said, worked hard and completely the project on time with GREAT quality!!!
BCD Excavation
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Reviewed in August 2023
Will say that I knew right away this was a professional group from my initial meeting with Sam during inspection. I told him exactly what I was looking to do and he gave me the options without the pushy sales approach. Jay and his crew arrived and went right to work and got both our attic and...
Purifox Safe, LLC
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Reviewed in August 2023
They cleaned the outside AC unit, checked the charge in the system, and replumed the PVC drain for the AC coil unit attached to the furnace quickly, completely, and for only $140! I already have additional work going their way, just waiting for it to get scheduled. Very satisfied.
Bob Bergen Heating & Refrigeration
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Reviewed in June 2023
I had half of my driveway replaced and Clarence aka Sam explained the whole process, the materials he and his crew would use, and gave me a competitive price for the project. They completed the concrete removal and replacement in a few days with excellent results.
CCC Concrete
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Reviewed in March 2023
I found Ron through a Google search and within two minute's of submitting a request for quote,, he responded with a follow-up phone call. Ron made extra efforts to a complete the home inspection the next day when it was a rush irequest for me and at no additional charge. Ron performed a...
Ron Smith Custom Real Estate Inspections
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Find Radon detection and reduction specialists in Williamsville

Home Inspections by Dana - Home Facebook

New to Angi

Radon Gas - Testing

Serving Williamsville, IL and surrounding areas

In business since 2016

Free estimates

Credit card accepted

25 years experience \n- family owned \n- Veteran \n-

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Meyer Inspections

New to Angi

Radon Gas - Abatement

Serving Williamsville, IL and surrounding areas

In business since 2011

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

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Radon Detection and Reduction questions, answered by experts

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.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

Installation typically takes 1-2 days, depending on the system and property layout.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

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

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Mitchell Grant
•
Aug 3, 2026Aug 3, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Amy Freeman
•
Jul 9, 2026Jul 9, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.