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*The Angi rating for Radon Detection And Reduction companies in Tidewater, OR 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 Tidewater, OR 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 October 23, 2025

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

Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.0(
72
)
Radon Gas - AbatementRadon Gas - Testing

Serving Tidewater, OR and surrounding areas

Approved (Corporate)

In business since 1974

Free estimates

Warranties offered

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and southern Washington for almost 4 decades. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs! \n \n

Encapsulation System
Before Encapsulation
Before Interior Drain System
After Interior Drain System
Finished basement

+38

Response time6 hrs
127 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
3.9(
23
)
Radon Gas - Abatement

Serving Tidewater, OR and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"You need to ask the technicians what to do and when regarding the re-test. The information we received was insufficient to know what to do afterwards and our re-test was delayed X 4 days because of lack of communication. Otherwise VERY Happy with the actual work and costs for the work."
Recommended by90%of homeowners
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Environmental Testing & Training NorthWest
4.0(
1
)
Radon Gas - Testing

Serving Tidewater, OR and surrounding areas

In business since 2011

Free estimates

Credit card accepted

We at Environmental Testing & Training NorthWest 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!

Response time12 hrs
Recommended by100%of homeowners
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All Corners Home Inspections
New to Angi
Radon Gas - Testing

Serving Tidewater, OR and surrounding areas

In business since 2014

Free estimates

Emergency services offered

All Corners Home Inspections 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.

Response time1 day
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Radon Detection and Reduction FAQs, answered by experts

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

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.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

Yes, many systems include warranties for performance. Confirm terms with your installer.

The Tidewater, OR 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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