Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near New Underwood, SD

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: 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: What are the benefits of radon mitigation?

• <div><p>Mitigation reduces radon levels, protecting your health and complying with safety standards.</p></div>

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 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>

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in New Underwood, SD?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in New Underwood, SD

*The Angi rating for Radon Detection And Reduction companies in New Underwood, 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 New Underwood, 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 July 07, 2026

Reviewed in July 2026
My neighbor noticed hail damage to my roof and recommended CE Construction for the repair. The roofer, responded to my call the next day and completed the repair in a timely manner. The tech, Troy was very professional and courteous explained to me the extent of the damage and what repairs...
CE Construction, LLC
Request a quote
Reviewed in April 2026
Casen was great to work with. I needed a section of my yard leveled out and he came out and gave me a free estimate that was very reasonable and then was quick to get the job done.
Tibbetts Landscaping
Request a quote
Reviewed in January 2026
Showed up when scheduled and complete the septic system install on time. Left the job site clean and well graded.
Elite Excavation and Iron
Request a quote
Reviewed in December 2025
He was very helpful and efficient. I'll use them again.
Gerbers Home Handyman Services
Request a quote
Reviewed in February 2025
The work was done quickly and professionally with no issues or concerns. I am disabled and I would constantly have icicles hangin from the roof and a slick/icy spot but since the gutters were installed haven't had many issues so I am very happy with the gutters and would recommend this...
ABC Seamless of The Black Hills
Request a quote
Reviewed in September 2024
They did a excellent job of trimming and cutting out the dead parts clean up after and hauling everything away, if you need any tree service done I highly recommend them to do the job you need done and not cost you a arm and a leg, and I might add They are the most friendly people I have met in...
B & D Lawn and Tree Service
Request a quote
Reviewed in May 2024
We were pleased with the results and experience with the installation and the windows themselves. The installers were professional and knowledgeable in answering all our questions. They demonstrated how the windows can be removed for cleaning. Thankful for such a pleasant experience with our...
Renewal by Andersen of Rapid City
Request a quote
Reviewed in October 2023
Crew was great and they noticed that the fasteners were too short and then went and got the correct ones Roof looks great
Joat Services
Request a quote
Reviewed in June 2023
They both cleaned the gutters and downspouts on the day we called. Worked quickly, efficiently and showed us before and after pictures.
Simpson Gutters & Repair
Request a quote
Reviewed in September 2022
Very thorough job and was meticulous on making sure there were no tiny areas missed. Came right over to give an estimate and fully explained his process/how he does a job.
CNR Construction
Request a quote

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

ALO Radon

4.9(

)

Radon Gas - AbatementRadon Gas - Testing

Serving New Underwood, SD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Anthony was very polite and knowledgeable. The hole job was done in two days. Radon readings went from 14 to 34 down to 0.4, we are very happy ."

+13

Response time3 hrs

Response rate94%

Recommended by92%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving New Underwood, SD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"He's extremely knowledgeable and practical, very down to earth. I think he could charge more, his pricing is very good. I would recommend him to anyone and I have already done so."

Response time6 days

Recommended by100%of homeowners

Request Quote

Blackburn Foundation Repair, LLC

4.6(

)

Radon Gas - AbatementRadon Gas - Testing

Serving New Underwood, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Excellent service! Pro was nice, easy to work with, professional! Never would have known he was here, he cleaned the working area so well! I would definitely recommend Blackburn Basement!!"

Response time1 day

88 neighbors recently requested a quote

Recommended by80%of homeowners

Request Quote

Black Hills Radon

New to Angi

Radon Gas - TestingRadon Gas - Abatement

Serving New Underwood, SD and surrounding areas

Approved

In business since 2022

Free estimates

Black Hills Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

1 neighbors recently requested a quote

Request Quote

Black Hills Professional Home Inspections LLC

New to Angi

Radon Gas - Testing

Serving New Underwood, SD and surrounding areas

In business since 2010

Top rated inspector in the Black Hills area

Request Quote

Empire Home Inspections, LLC

New to Angi

Radon Gas - Testing

Serving New Underwood, 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

Request Quote

Radon Detection and Reduction FAQs, answered by experts

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.

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.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

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.

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 New Underwood, 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
•
Sep 28, 2026Sep 28, 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
•
Oct 30, 2026Oct 30, 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
•
Sep 23, 2026Sep 23, 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.