1 / 36
Verified record
No state license for this trade. New Hampshire doesn't license or register remediation servicesbusinesses, so there's no state registry to check. That's true of every remediation services business in the state, not a mark against this one. Insurance is self-reported.
- 34 reviews in the last 6 monthsNo negatives
- 18 customer photosOf completed work
Highlights
- Named technicians -- reviewers consistently praise Scott, Connor and Marcus by name for thorough, punctual work
- Measurable results -- customers report resolved arsenic, iron and chlorine issues after install
- No-cost PFAS program -- helps homeowners get NHDES-reimbursed PFAS filtration installed
- Local news coverage -- profiled by the Union Leader for restoring a family's tap water
- Pricing and testing dispute -- one 2025 review alleged inflated test results and above-market pricing
NH Tap is a residential water treatment company based in Milford, New Hampshire, owned and run by Keith McDonald. The company installs whole-home water filtration, PFAS removal, water softening, reverse-osmosis, UV and radon-removal systems for both public-water and private-well customers across the state, and is a listed provider with the NH Department of Environmental Services. Google rates the business 4.9 stars from 271 ratings, and the track record is deep and consistent: 209 reviews from 2021 through 2026 across four platforms, with 34 in just the last six months and none of them negative. Reviewers repeatedly name the same field technicians -- Scott, Connor Winslow, and Marcus -- for arriving on time, explaining the system clearly, and leaving the work area clean; several describe measurable results, from resolved arsenic and iron levels to eliminated chlorine taste and PFAS removal confirmed by follow-up testing. A 2023 Union Leader profile described a Londonderry family able to drink their tap water for the first time in four years after an NH Tap installation, and the company has been covered for its no-cost PFAS-Free Program, which files paperwork and covers upfront costs for homeowners seeking NHDES reimbursement. One notable exception sits in an otherwise glowing record: a 2025 review alleged the company's free water-test results were inflated compared to another tester's results a few days later, and that its quote ran roughly double other companies' pricing for a comparable system. Homeowners considering a larger install should get a second water test and a comparison quote before committing. New Hampshire has no statewide licensing requirement covering water-treatment installation itself; NH Tap's own site states it keeps licensed master plumbers on call for more complex jobs, but that claim comes from the company's own site rather than a state registry. For homeowners dealing with New Hampshire's well-known water issues -- arsenic, PFAS, hard water, or iron staining -- NH Tap looks like an established, well-reviewed local option, especially given how often the same named technicians are called out across years of reviews.
Is this your business?Claim this page →
