Mark Lowthers Plumbing

Mark Lowthers Plumbing is a one-person, family-run outfit based in Ashby. The company says Mark has 40+ years of plumbing and heating experience, working residential and commercial jobs across central Massachusetts. The specifics recur across years of five-star Google reviews. In February 2022, a homeowner had Mark track down a pinhole leak in an elbow on a main waterline above a basement drop ceiling and fix it the same day he was called. Later that year he fixed a leaking basement pipe and, separately, did after-hours gas line pressure tests and repairs ahead of a home sale, priced fairly with a 24-hour turnaround. In October 2023, a homeowner said they called on a Sunday morning — when most owners want their phone to stay quiet — and Mark responded within 5 minutes, pulling into the driveway about 15 minutes later. A March 2024 review said he'd helped out more than once, sometimes just with phone advice, and called him prompt on both calls and visits. In August 2025, a homeowner described Mark replacing an old stem valve with an entirely new unit, with no damage to the surrounding area, after coming out first for an evaluation and returning two days later to finish the job. The most recent review, from April 2026, said Mark has done a couple of jobs for that customer over the years and called him a great plumber who's courteous and prompt to respond. His Massachusetts plumbing license (20780-PL-J) is active on the state registry. For a straightforward repair or replacement in the Ashby/central Massachusetts area, this is a shop built around Mark answering the phone himself — worth checking his current availability given it's a one-person operation.