
Serving Ontario, WI and surrounding areas
Approved
In business since 1989
Free estimates
Warranties offered
"American Waterworks did a great job installing my home's radon remediation system. I highly recommend them for this kind of job."





+156

*The Angi rating for Radon Detection And Reduction companies in Ontario, WI 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 Ontario, WI 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 May 29, 2026

Serving Ontario, WI and surrounding areas
Approved
In business since 1989
Free estimates
Warranties offered
"American Waterworks did a great job installing my home's radon remediation system. I highly recommend them for this kind of job."





+156
Serving Ontario, WI and surrounding areas
In business since 2013
Free estimates
"I very rarely write endorsements, but in this case, my experience was so satisfying that I felt an obligation to share. I have no connection to Marty, other than hiring him and his company, I have not been paid or discounted to write this and I never would sell my opinion. I had massive amounts of water leaking into my finished basement during the July 2017 record rainfalls. It wasn't the first time to get some water, but this was way more than normal. Carpet smelled really bad. I was sneezing and couldn't spend more than a few minutes downstairs to do my laundry. I contacted 2 contractors listed on Home Advisor. Marty from ATI called first thing the next day. He rearranged his schedule to see the damage after I told him I was anxious to get it fixed asap. He arrived on time and texted before he arrived. Very professional. Highly qualified. I was impressed with his scientific knowledge of the problem. He was NOT selling me on his services, he explained how the damage occurred, how to clean it up and what would need to be done to fix it. He discovered potential asbestos tile underneath the soaked carpet. I told him to take it all out and remediate mold and asbestos. I chose to forgo the prior testing to expedite the repair. He gave me a quote on site and I gave him a down payment. He and his employee, Wyatt, arrived 10 days later and worked more than 12 hours that day in hazmat suits and masks. The amount of work needed was unbelievable. They sealed off the basement with plastic and put up notices of the hazards. They came back another day to complete outside drainage of gutters. I asked about some other asbestos abatement and Marty prepared a proposal for exactly what I requested. I didn't hesitate to sign another contract for the additional work based on the quality of their work. I'm extremely pleased with their work and the results. I could add so much more to this review for all the things they did above and beyond the contract. One thing they did was to help move an old commercial oven from the basement when a buyer showed up in the midst of their remediation work. I thought the pricing was reasonable. The other quote I received was from someone who outlined a completely bogus remediation using essential oils and a $1000 fan. The other contractor told me he would not be wearing the hazmat suits and masks. That contractor's proposal was close in price to ATI, but I am certain the outcome would have been horrible. I spent $3250 on the first remediation and will spend another $4000 on the second part of the remediation."
Serving Ontario, WI and surrounding areas
In business since 2021
Free estimates
Scott 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
Serving Ontario, WI and surrounding areas
In business since 2018
Free estimates
With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.
Serving Ontario, WI and surrounding areas
In business since 1994
For lead testing and other specialty services JW Rothrock Inc. is Wisconsin's premier in lead testing as well as abatement. For cost effective and professional service JW Rothrock is by far above and beyond the rest.
From average costs to expert advice, get all the answers you need to get your job done.

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.

The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.

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.

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.

What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.

Knowing how to test for radon will keep your home free and safe from this odorless gas—you just have to decide whether to do it yourself or hire a pro.