US Water Consultants Inc

US Water Consultants is a family-owned water treatment and radon company in Windham, New Hampshire, that installs and services softeners, neutralizers, UV, arsenic and PFAS filtration and radon mitigation for air and water, and runs its own water testing. The company says it has been at this for over 40 years; the Better Business Bureau lists it as in business since 1998 under president Mark C. Widdison and grades it A+ without accreditation. HomeAdvisor lists an NRPP radon measurement certification and a water-works operator credential for Mark Widdison — the directory's claims, not verified here. The platform numbers are strong: 4.9 stars from 83 reviews on Angi and HomeAdvisor, 4.0 from 19 on Google. Customers over the years describe fast quotes, plain explanations and jobs done in a day. In February 2025 a new homeowner needing radon mitigation for both air and water said the estimator talked them out of a more expensive system than they needed, and a July 2025 review praised technician Keith for a softener service call that answered every question without a sales pitch. In 2023 a couple had pH treatment, a softener and a radon system set up in one day at a lower price than competing quotes; a 2022 customer with sulfur-smelling well water was referred by a Massachusetts company that does not serve New Hampshire, and another that year noted a courtesy call for a 15-minute delay. Angi reviews from 2020 and 2021 repeat the same themes — quick radon fan replacements, thorough clean-up, the owner estimating jobs himself and comparing equipment brands. The complaints are about follow-through, and they are the newest Google entries. In February 2025 a customer said an Entipur Aircycle system installed in 2021 had backflushed particles into the water and was now putting air in the supply lines, and the company had no explanation. In September 2024 a homeowner with a radon system problem said repeated emails and calls asking for a servicing technician went unanswered, and in November 2023 a buyer referred by their realtor waited a month for a quote that never came. Before you call, ask how service requests are handled after the install and what the warranty covers on the specific equipment they propose. New Hampshire does not license water treatment installers or radon mitigators, so there is no state registration to check for this trade. For a new radon system, a well-water treatment setup or a PFAS or arsenic filter with testing built in, this is a long-established local outfit with a deep, mostly positive history. Get a named contact for after-sale service in writing.