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Avatar for Active Radon Management

Active Radon Management

5.00(
5
)
•Approved Pro

Active Radon Management

5.00(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Active Radon Management is here to help you with alleviating the radon problem in your home. Through certified radon monitoring and custom built radon mitigation systems, we are able to bring radon down to a safe level. For the last seven years we have been helping homeowners reduce the amount of cancer causing radon gas, and we can help you too. We pride ourselves on our commitment to excellence in every aspect of our business. We value integrity bound by fairness, honesty, and personal responsibility. Accurate knowledge of our trade combined with years of experience make our quality of service unique. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very knowledgeable and quick to reply"

Jill M on March 2022

Active Radon Management is here to help you with alleviating the radon problem in your home. Through certified radon monitoring and custom built radon mitigation systems, we are able to bring radon down to a safe level. For the last seven years we have been helping homeowners reduce the amount of cancer causing radon gas, and we can help you too. We pride ourselves on our commitment to excellence in every aspect of our business. We value integrity bound by fairness, honesty, and personal responsibility. Accurate knowledge of our trade combined with years of experience make our quality of service unique. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very knowledgeable and quick to reply"

Jill M on March 2022

Avatar for American Waterworks

American Waterworks

4.78(
132
)
•Approved Pro

American Waterworks

4.78(
132
)
•Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
415 local quotes requested

When it comes to water in your basement or a faulty foundation, you need an expert to ensure the damage is reversed and prevented from occurring in the future. American Waterworks has several decades of experience in the basement waterproofing and foundation repair industries, and we know the best tools and techniques to see your home through its troubles. Our professional installers are experienced in solving the wide variety of problems that allow water into basements and other areas below ground level. We've helped property owners with thousands of repairs and other restorations to homes in Minnesota, North Dakota, northeastern Iowa and western Wisconsin. American Waterworks is ready to serve all of your basement, crawl space, foundation, concrete leveling and radon mitigation needs. Call us today for a free estimate!

"This job was completed efficiently and professionally. A design specialist came to test and measure every detail for the project. The crew arrived with everything needed for the job. They worked very hard to install Waterguard in the concrete floors inside around the foundation to the sump pump basket. They also installed Geo-lock anchors to support a block wall that was bowed. This company has 36 years in business and provides excellent results and professional customer relations. Call Amer. Wtrwrks for a free estimate. You will not be disappointed. A wise investment of $11,270."

Donna A on September 2025

When it comes to water in your basement or a faulty foundation, you need an expert to ensure the damage is reversed and prevented from occurring in the future. American Waterworks has several decades of experience in the basement waterproofing and foundation repair industries, and we know the best tools and techniques to see your home through its troubles. Our professional installers are experienced in solving the wide variety of problems that allow water into basements and other areas below ground level. We've helped property owners with thousands of repairs and other restorations to homes in Minnesota, North Dakota, northeastern Iowa and western Wisconsin. American Waterworks is ready to serve all of your basement, crawl space, foundation, concrete leveling and radon mitigation needs. Call us today for a free estimate!

"This job was completed efficiently and professionally. A design specialist came to test and measure every detail for the project. The crew arrived with everything needed for the job. They worked very hard to install Waterguard in the concrete floors inside around the foundation to the sump pump basket. They also installed Geo-lock anchors to support a block wall that was bowed. This company has 36 years in business and provides excellent results and professional customer relations. Call Amer. Wtrwrks for a free estimate. You will not be disappointed. A wise investment of $11,270."

Donna A on September 2025

Avatar for Environmental Air Solutions, Inc.

Environmental Air Solutions, Inc.

4.00(
4
)

Environmental Air Solutions, Inc.

4.00(
4
)
Customers say: Quick response
17 years of experience

We offer a wide range of dependable services, such as air testing and mold control. With experienced and professional air quality consultants, you can count on us to make the air you breathe healthier and safer.

We offer a wide range of dependable services, such as air testing and mold control. With experienced and professional air quality consultants, you can count on us to make the air you breathe healthier and safer.

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Radon Detection and Reduction questions, answered by experts

DIY radon detection is possible using over-the-counter test kits, but professional testing can provide more accurate assessments, especially in cases of high initial readings.

Testing typically costs between $150 and $500, depending on the method used and the number of areas tested.

Using an air purifier in your home or basement isn't an effective way to reduce or mitigate radon. Radon is an inert gas, meaning it doesn't react with other chemicals and can't be filtered the way particulates can be. While an air purifier can help improve your indoor air quality in other ways, don't rely on it to reduce radon.

You should have a professional test for radon every two to five years. A good rule of thumb is to get testing done every five years if you’ve never had an issue before and every two years if you have. You may also want to schedule testing if you notice symptoms of radon exposure or if you do intermittent DIY radon testing and notice changes in your levels between tests. If you have an active radon monitor, you can schedule testing if you notice levels increasing over time.

Properties should ideally be tested for radon every 2 to 5 years or sooner when changes to the property structure or ventilation occur that might impact airflow.

The Mandan, ND 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.

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