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Radon in well water, a pump that quit, a tank rusted through — those are the calls Superior Water & Radon Systems LLC in Derby takes. The company's website says it has over 60 years of combined experience, services all of Connecticut and offers 24-hour emergency well pump service, and it says it has been in business 15 years. On Google it holds a 5-star average from 119 ratings. A recent customer said they woke up to no water, Tom sent Bill and Alex, and it turned out they needed a new well pump; that customer added that he had installed a bubble-up radon system the year before. A recent customer with a logistically remote property said Tom did not hesitate to take the job and that every step of the scope of the work was explained. A 2025 customer said Tom explained how a bubble-up system would remove 99% of the radon from their well water, and that Bill and Mario installed it and, for the same price, serviced the well tank and installed a new gauge. A 2024 customer said Tom diagnosed a radon mitigation system another company had installed and, after repeated water testing, made repairs and modifications. A 2023 customer said the company found their filtration system could not handle the radon level and installed a radon water aeration system. A 2022 customer said they called about 4:00 on a Saturday afternoon and Bill was there by 5:30; Bill and Tom came back Sunday morning, pulled the pump, found a cracked pipe and replaced the pump and the pipe. A 2023 customer said Tom's guys came the same day with a new tank for a severely corroded one and serviced the radon unit in one afternoon. A 2025 customer said Tom came out the same day for a water leak with the parts to repair it. A 2022 customer gave two stars, writing that it took several attempts to get a hold of a person. Connecticut lists its home improvement contractor registration, HIC.0631056, as active, held by Superior Water & Radon Systems LLC.
I highly recommend Superior Water and Radon Systems LLC. Tom was already highly recommended to us from our friends. To begin, we have a property which logistically is remote, so it presented challenges as far as getting equipment and supplies to the site. We probably wouldn’t blame any contractor if they turned us down but Tom didn’t hesitate and his attitude was “challenge accepted”. After speaking with Tom, we looked no further and were confident that we chose well. Every step of the process was explained to us as far as the scope of the work which was being performed. The quality of the work is second to none. We have the confidence that we will be enjoying a quality water system for years to come.
Tom and his team went above and beyond to rescue my well water. Any hour day or night you can rely on excellent service. They are a knowledgable and honest team of progessionals who you can count on to get the job done. I already look forward to working with them again!
We woke up to no water and Tom sent Bill and Alex for the first appointment to take care of us. Turned out we needed a new well pump. Bill really knows his stuff and does expert work. He is also quite personable and explains things very well as he answers all our questions. So glad to have water again! Last year he also installed a bubble-up radon system that not only removed the radon in the water, but also created more water pressure throughout the whole house. Great investment. Tom runs a quality company - Superior Water and Radon - that is now servicing all of our water needs. So thankful!
Stand-up Owner great customer service and a pleasure to do business with. I highly recommend dealing with Tom in particular. My friends Fred and Ryan recommended him to me and I’m thankful for that.
amazing work done Thomas and company came in was on time and did quality work
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Oct 14, 2026.
Basement rebuild after a flood4.1
Closing saved after three failed radon fan attempts4.2
House put back together by an on-time crew3.3