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Verified Reviews for Radon Detection And Reduction pros in Williston, ND

*The Angi rating for Radon Detection And Reduction companies in Williston, ND 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 Williston, ND 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 December 20, 2025

Find Radon detection and reduction specialists in Williston

Avatar for Inside Out Painting & Remodeling LLC

Inside Out Painting & Remodeling LLC

4.80(
52
)
•Approved Pro

Inside Out Painting & Remodeling LLC

4.80(
52
)
•Approved Pro
Customers say: Terrific value
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
7 years of experience

We offer over 37 years of industry experience and will provide you with an unmatched level of expertise and commitment to your home improvement project. We've earned a solid reputation for a variety of residential home improvement and repair projects to include painting & drywall finishing, faux finishes, custom cabinetry, and complete remodels for any room in your home. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction! References are available upon request. Give us a call today, and let's get started.

"Charley made me feel at ease. He was honest and did the job beautifully and fast. I will use him again for many projects as he is multi talented. Highly recommend."

Heidi V on October 2023

We offer over 37 years of industry experience and will provide you with an unmatched level of expertise and commitment to your home improvement project. We've earned a solid reputation for a variety of residential home improvement and repair projects to include painting & drywall finishing, faux finishes, custom cabinetry, and complete remodels for any room in your home. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction! References are available upon request. Give us a call today, and let's get started.

"Charley made me feel at ease. He was honest and did the job beautifully and fast. I will use him again for many projects as he is multi talented. Highly recommend."

Heidi V on October 2023

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

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.

Radon Detection and Reduction questions, answered by experts

Yes, if high levels are detected, professionals can provide solutions for radon reduction.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

Installing a mitigation system reduces radon levels, which can cause lung cancer, providing peace of mind and long-term health benefits. It can also increase your home’s value, as many buyers prefer properties with radon safety measures in place. The investment is relatively low compared to the potential health risks associated with prolonged radon exposure.

No level of radon is technically safe, but because it’s everywhere—even in the air outside—it’s impossible to avoid entirely. Instead, the Environmental Protection Agency encourages taking preventative measures if the levels of radon in your home rise above 2 pCi/L. (For reference, the average radon level in homes across the United States is 1.3 pCi/L.

Professional radon detection involves placing test kits in the lowest lived-in level of the house for a period, usually 48 hours to several months, followed by lab analysis of collected data.

The Williston, 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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