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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: Can I use my sump pit for radon mitigation?

• <div><p>If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.</p></div>

Q: Can I install my own radon mitigation system?

• <div><p>A <a href="https://www.angi.com/articles/can-homeowners-install-radon-mitigation-systems.htm">homeowner can install a radon mitigation system</a> on their own. But it&rsquo;s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.</p></div>

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

• <div><p>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.</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>

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Verified Reviews for Radon Detection And Reduction pros in Alexandria, SD

*The Angi rating for Radon Detection And Reduction companies in Alexandria, SD 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 Alexandria, SD 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 01, 2026

Reviewed in June 2026
Tim trimmed some big branches over hanging our house and was very professional. Would highly recommend him for any tree project you might have.
TNT Tree Service
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Reviewed in June 2025
We needed 3 custom built-in bookshelves and Linden did a fantastic job getting us exactly what we needed! He is professional, prompt, communicative and easy to work with. Craftsmanship was outstanding. He takes great pride in his work and we would definitely recommend him to others!
Deckers
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Reviewed in January 2024
Marlin came and installed our dishwasher when he said he was going to come and do it, and he did a good job! He quoted us a price, and that was the price he charged us. We would have him come and do work for us again!! Well done!!
Marlons Repair
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Reviewed in March 2023
He was easy to work with, good at listening what we wanted and open to changes.
TT Electric, LLC
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Reviewed in February 2023
Our experience with SD Windows and Doors was very positive. They were professional and did an absolutely beautiful job with our project. They were also very knowledgeable and helpful. We would highly recommend them to anybody.
South Dakota Window & Door, LLC
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Reviewed in April 2021
They are very professional, very on time, did really good work, and I cannot be happier.
J & C Construction
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Reviewed in December 2020
Good work, good service and he's one that will always do his best.
Caleb Wipf
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Reviewed in June 2020
Harlan was professional, polite, and honest. He completed everything in a timely matter, payed attention detail, worked well with all the requirements we needed to abide by, and he did everything himself! Most of the other contractors I had reached out were not willing to follow the guidelines...
Dillon's Dakota Excavating Service
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Reviewed in June 2020
Ryan was great to work with especially since I had concerns about water lines in the tree roots. Ryan took care of all the locate requirements and checked in regularly with me. He will be hired to do some more trees for us!
Focus Land Management
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Reviewed in February 2019
Very professional and customer service friendly.
Troyer Homeworks
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Find Radon detection and reduction specialists in Alexandria

Blackburn Foundation Repair, LLC

4.6(

)

Radon Gas - AbatementRadon Gas - Testing

Serving Alexandria, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Blackburn came out to repair my garage foundation. They were quick, efficient, and left the area in great condition."

Response time1 day

91 neighbors recently requested a quote

Recommended by80%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving Alexandria, SD and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Jeremy was very professional and pleasant to work with!! I have allergies and can breathe so much better in my house now!!"

Response time20 mins

Recommended by100%of homeowners

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Empire Home Inspections, LLC

New to Angi

Radon Gas - Testing

Serving Alexandria, SD and surrounding areas

In business since 2022

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! Book with us online or feel free to give us a call today!\n\n

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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.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

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.

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

The Alexandria, SD 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
•
Mar 18, 2026Mar 18, 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.