Mercer Island Plumber — Serving Both Mercer Ways and Every Neighborhood Between Them
Trenchless, low-impact water line & sewer replacement — by our own crew, never subcontracted.
Done Right Plumbing is a licensed plumber working across Mercer Island, from the North End neighborhoods of East Seattle, Mercerdale and First Hill around Town Center, along the hillside and waterfront lots of West and East Mercer Way, and down Island Crest Way to the South End. Most of the island’s houses went up between the 1950s and the 1970s on big, wooded, sloping lots, and on an island every job is also a logistics job: we plan for the bridge, bring everything with us, and finish what we start.
Plumbing Services in Mercer Island
Trenchless Water Line Replacement
Pull a new service line under long island driveways, mature trees and terraced beds from two small pits, the way we did on the east side of the island.
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Trenchless Sewer Repair
Line or burst a failing side sewer in place rather than trenching a hillside lot.
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Sewer Line Repair & Replacement
Spot repairs, new cleanouts and full replacements on lines as old as the houses above them.
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Drain and Pipe Services
Kitchen, bath and main-line drain work, with a camera down the line before anyone quotes.
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Water Heater Installation & Repair
Tank, tankless and gas-to-electric changeovers, done complete with the expansion tank, both straps and the permit the city requires.
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24/7 Emergency Plumbing
Round-the-clock response, with the bridge factored into the promise.
Learn More →Why Mercer Island Homeowners Choose Trenchless
The ramblers and split-levels between Island Crest Way and the two Mercer Ways mostly date from the 1950s to the 1970s, with larger houses replacing some of them lot by lot ever since. Their original plumbing came from that era: galvanized and early copper inside, and on a great many properties the black poly water service pipe that went into Puget Sound yards through the 1970s and 80s. We find a lot of that black plastic here, and when it starts leaking it rarely stops at one spot.
Water reaches the island from Seattle Public Utilities through a sixteen-inch and a twenty-four-inch supply line, mostly from the Cedar River, and the City of Mercer Island runs the distribution system and the meters from there. Sewer is the more unusual story: the island’s wastewater is pumped around its perimeter through the city’s low-pressure Lakeline system and a string of pump stations before it heads to King County’s plant in Renton. The side sewer from your house out to the city’s line is yours to maintain, and that is the part we camera, clear, line and replace.
Then there is the ground itself. Island lots run long and steep, and the service lines under them often cross a private drive, a retaining wall and forty years of landscaping on the way to the house. That is why we bring the boring rig to Mercer Island more often than the excavator: two small pits at either end of a run beat a trench through everything in between.
Recent Work in Mercer Island
In June, Malikai and Joshua replaced a water heater at a managed property near Mercer Village, where Island Crest Way meets SE 68th Street at the island’s south end. The old unit was a power-vent gas heater and the new one is a fifty-gallon Bradford White electric, so the job was a changeover rather than a swap: the crew took out the gas unit, capped the gas line and the vent, set the new tank on a stand, strapped it top and bottom, and added the expansion tank a closed system needs, all with a two-year warranty on parts and labor.
About Mercer Island
Mercer Island sits in the middle of Lake Washington, tied to Seattle and Bellevue by the I-90 bridges and organised around Island Crest Way, which runs from Town Center at the north end past Pioneer Park to the South End’s shops around SE 68th. East Seattle, Mercerdale and First Hill on the North End are the island’s oldest neighborhoods; the two Mercer Ways trace its shoreline. It is a place where houses are kept well and lots are kept green, and the plumbing under both deserves the same standard.
FAQs About Plumbing in Mercer Island
Where does Mercer Island’s water come from, and which part of the line is mine?
Seattle Public Utilities delivers the island’s water through a sixteen-inch and a twenty-four-inch supply line, mostly from the Cedar River, and the City of Mercer Island distributes it. The city owns the main and the meter; the service line from the meter to your house belongs to you, and that is the line we repair and replace.
Who handles sewer on Mercer Island, and where does my side sewer end?
The city pumps the island’s wastewater around the shoreline through its low-pressure Lakeline system and a series of pump stations to King County’s plant in Renton, which is why county charges appear on a city bill. Your responsibility ends where your side sewer meets the city’s line, and everything before it is what we camera, clear, line or replace.
There is black plastic pipe where my water line comes into the house. Should I be worried?
Black poly service pipe was common on the island through the 1970s and 80s and is at the end of its life. One leak is usually the start of a pattern, so we quote the spot repair and the trenchless replacement side by side. A new line pulled from the meter to the house retires the run in a day.
Do I need a permit to replace a water heater on Mercer Island?
Yes. The City of Mercer Island requires a plumbing permit for a water heater replacement, whether the new unit is gas, electric or tankless, and the work gets inspected. We pull that permit, include the fee in the quote and schedule the inspection, so the only thing you have to do is be home when the inspector comes.
Can you switch a gas water heater to electric on Mercer Island?
Yes, and we did that at a South End property in June: the old power-vent gas heater came out, the gas line and the vent were capped, and a fifty-gallon electric took its place with an expansion tank and seismic straps. The changeover needs a suitable electrical circuit, so we confirm that before quoting.
How long does it take you to reach Mercer Island from Lynnwood?
Our shop is in Lynnwood, so the island is a drive down I-405 and across I-90, usually forty minutes or so outside of the commute. For scheduled work that changes nothing, because we plan island jobs as full visits with everything on the truck. For emergencies we give you an honest arrival time when you call, not an optimistic one.
Licensed, Bonded & Insured
WA Contractor License #DONERRP852N5
Done Right Plumbing is fully licensed, bonded and insured in Washington State — family-owned and serving the greater Seattle area since 2011, with twelve technicians and our own boring, jetting and camera equipment. Your Mercer Island job is run by a Done Right crew from the quote through cleanup, and we pull the city permits the work requires.
Call Done Right Plumbing for Mercer Island Plumbing Services
A water bill that climbed for no reason, a water heater past its tenth year, or black poly you have been meaning to deal with? Call for a free estimate, or request a callback and we will reach you at a time that works.