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Plumber in Cohasset, MA
Premium plumbing services for Cohasset homes and coastal properties.
What we actually get called for in Cohasset
Across our completed Cohasset jobs, drain and sewer work is what we are called for most, followed by fixture repair and replacement and heating and boiler work.
Share of our completed Cohasset jobs by type — from our own job records, not estimates.
Recent jobs in Cohasset
Completed by our own technicians, straight from our job records. Locations are approximate — the town, never the address.
Plumbing Services in Cohasset
Emergency Plumbing in Cohasset
24/7 emergency plumbing response in Cohasset
Drain Cleaning in Cohasset
Drain and sewer cleaning in Cohasset
Water Heater Service in Cohasset
Water heater repair and replacement in Cohasset
Pipe Repair in Cohasset
Leak detection and pipe replacement
Heating Repair in Cohasset
No-heat calls, radiators, and heating-side plumbing
Gas Heat
Boiler, furnace, and gas line service
General Plumbing
Fixture installs, upgrades, and maintenance
Boiler Repair in Cohasset
Boiler diagnostics, part replacement, and no-heat service for gas systems.
Garbage Disposal
Disposal repair, jam clearing, and full replacement — same-day availability when scheduling permits.
Ceiling Leak Repair
Source identification and pipe repair for water stains and active ceiling leaks.
Toilet, Faucet & Fixture Repair in Cohasset
Toilet, faucet, shower-valve, and shut-off repairs for Cohasset homes, old and new.
What does a Cohasset plumbing call usually involve?
A Cohasset plumbing call usually involves the coast in one way or another, whether the symptom is a drain, a fixture or a boiler. Drain and sewer work is the largest part of what we have completed in Cohasset, fixture repair is next, and heating and boiler work rounds out the three kinds of job we are called for most; across all of it the recurring details are salt-air corrosion on exterior fixtures and hose bibs, seasonal shut-downs on houses that are not lived in year-round, and drainage protection ahead of heavy weather. The two pages we publish against the most Cohasset work are drain cleaning in Cohasset and toilet, faucet and fixture repair in Cohasset; boiler repair and heating repair in Cohasset have their own pages as well.
The town itself sets the rest. Water comes from the Weir River system Cohasset shares with Hingham and Hull, part of town drains to the treatment plant in Hull while the rest runs a septic system, and shallow ledge decides where a service line or a disposal line can go. That is why a water heater in Cohasset is sized against the same water as one in Hingham but installed around rock, why a pipe repair in an older shorefront house in Cohasset Village or near Sandy Beach so often finds a run that was piped for summer use, and why an emergency call in Cohasset begins with the question of which drain system the house is on. The harbor carries a no-discharge designation, so what leaves a property is taken seriously by the town, and we treat a backed-up line here accordingly.
What our records show for Cohasset
- Completed jobs in Cohasset
- over 50
- Who has done the most of this work in Cohasset (last two years)
- Nate, Jahz and Nick
- Most recent completed job in Cohasset
- June 2026
From our completed-job records as of October 2026. Counts are rounded down, never exact.
How do we handle calls from Cohasset?
A call from Cohasset is scheduled from our Quincy office. The first thing we ask is whether you have used us before, because a returning customer's address and history are already on file and the call is shorter for it. Then we ask for the address itself and what is happening, in your own words.
If water is running or sewage is coming up, the conversation turns to the main shut-off before anything else, and a plumber is dispatched. If it is not an emergency, you choose from the appointment windows the Quincy office has open, and the plumber confirms the price with you on site before any work starts. We have done work in dozens of Cohasset homes. Our completed Cohasset work sits in the 02025 ZIP code, so an address in town is not a question for us; if yours is on a private road or a shared driveway, say so when you book.
Where else do we work near Cohasset?
The towns next to Cohasset that we also publish a page for are Hingham, Scituate, Hull and Norwell. Their own pages: Plumber in Hingham (with its own pages for drain cleaning, emergency plumbing, water heater work, boiler repair, toilet, faucet and fixture repair), Plumber in Scituate (with its own pages for drain cleaning, toilet, faucet and fixture repair), Plumber in Hull (with its own pages for drain cleaning, water heater work, heating work, toilet, faucet and fixture repair) and Plumber in Norwell (with its own pages for toilet, faucet and fixture repair). The same crews cover all of them, so a Cohasset job that turns out to sit over a town line is not a problem.
Why Cohasset Residents Choose Johnson Bros.
Priority Scheduling
Same-day appointments and emergency support when you need it.
Experienced Specialists
Licensed plumbers who understand coastal home needs.
High-End Service
Premium workmanship and respectful in-home service.
Cohasset Neighborhoods We Serve
Cohasset Village, Beechwood, North Cohasset, Jerusalem Road, Border Street
Common Plumbing Issues in Cohasset
Corrosion
Coastal salt air can accelerate pipe corrosion.
Sewer Backups
Older sewer lines that need cleaning or replacement.
Water Heater Wear
Sediment buildup reducing efficiency.
Seasonal Shutdowns
Winterization for seasonal or vacation homes.
Schedule Plumbing Service in Cohasset
Keep your Cohasset home running smoothly with Johnson Bros. Plumbing.
Water and sewer in Cohasset — and what it means in your basement
Cohasset takes its drinking water from the Weir River Water System shared with Hingham and Hull, and roughly three hundred homes here send their wastewater to the treatment plant over in Hull rather than to anything within the town's own borders. The rest of Cohasset is not on that connection, which makes this one of the more mixed towns we work in: a street served by the sewer connection and a street on Title 5 disposal can sit within sight of each other. Being on the coast sharpens everything. Salt air corrodes exposed fittings and outdoor spigots faster than inland, a high water table near the harbor puts steady pressure on below-grade drainage and sump arrangements, and the harbor carries a protected no-discharge designation, so what leaves a property is taken seriously by the town.
Source: Weir River Sewer District.
How Cohasset was built — and what is behind the wall
Cohasset takes its name from the Conihassett Grant of 1633, made to four Merchant Adventurers of London, and it was part of Scituate before standing on its own; the harbor and the rock ledges rather than any factory shaped how it filled in. That produces a housing stock weighted toward older coastal building and later low-density development rather than dense industrial-era rows. Ledge is the practical complication here: shallow rock makes trenching for service and disposal lines expensive and sometimes routes them in ways a plumber has to work around rather than through. Add the coastal factors -- salt on exposed fittings, a high water table near the harbor, and older shorefront houses originally piped for seasonal use -- and the same job costs more here than two towns inland.