4 services · Seattle
Drains & sewer in Seattle, WA
A single slow sink is usually a local clog a plumber can clear in one visit. Several drains backing up at once, gurgling toilets or water at a basement floor drain point to the main sewer line, which may need cleaning, a camera inspection and sometimes repair.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Drains & sewer services in Seattle
Drain cleaning
UrgentIf one fixture is slow, the clog is usually in that fixture's branch line. If several drains back up at once, or the basement floor drain fills when you run the washer, the main sewer line is blocked and needs a larger cable or a jetter.
Hydro jetting
Hydro jetting cleans the full width of a drain pipe with high-pressure water, washing out grease, scale and fine roots that a cable only punches a hole through. It works best on sound pipe and is usually done after a camera inspection confirms the pipe can take it.
Sewer camera inspection in Seattle
A sewer camera inspection runs a waterproof camera through the line from your house to the city main and records what it finds: roots, cracks, sags, offset joints or collapsed pipe. It's the best way to decide between cleaning, spot repair and replacement.
Sewer line repair in Seattle
UrgentA damaged sewer line can be fixed with a spot repair, a trenchless liner, pipe bursting or an open-trench replacement. Which one fits depends on what the camera shows, how deep the pipe is, and what's on top of it, such as a driveway, trees or landscaping.
Local conditions
Drains & sewer in Seattle: what's different
Seattle homeowners own their side sewer all the way to the main, and in Ballard, Wallingford and Queen Anne many of those lines are original clay running down steep yards. Long wet seasons saturate the soil around them, and roots find the joints.
Side sewer work in Seattle needs a permit from the city, separate from the plumbing permit issued by Public Health – Seattle & King County. A camera inspection first shows whether a clog, a cracked joint or a sag is the problem and how deep the line runs on a sloped lot.
- Water and sewer in Seattle
- Seattle Public Utilities provides water, sewer and drainage service.
- Permits in Seattle
- Plumbing and gas piping permits in Seattle are issued by Public Health – Seattle & King County; side sewer permits come from the City of Seattle.
Seattle housing and plumbing
Craftsman homes from the early 1900s in Ballard, Wallingford and Queen Anne often have basements, clay side sewers and galvanized supply.
Other Seattle conditions that affect plumbing
- Side sewer repairs: Seattle homeowners own their side sewer to the main, and older clay lines often need repair.
- Heavy rain: Wet winters test basements, drains and sump pumps.
- Earthquake readiness: Water heater strapping and flexible connections reduce damage risk.
- Rain and steep lots: Seattle's many hills mean side sewers run down steep yards, and long wet seasons saturate soil around older clay pipe.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Seattle and King County, including Ballard, Capitol Hill, Queen Anne, Wallingford, West Seattle, Beacon Hill. ZIP codes: 98101 · 98102 · 98103 · 98104 · 98105 · 98106.
When to call a plumber in Seattle
- Water backing up in the tub or shower when a toilet flushes
- Several fixtures draining slowly at the same time
- Water or sewage at a basement floor drain
- Gurgling from drains or toilets
- Sewer smell inside or a soggy patch in the yard
- The same clog returning within weeks of being cleared
How these problems start and how to choose between repair options is covered in the drains & sewer guide.
Drains & sewer questions in Seattle
Who is responsible for a side sewer in Seattle?
Are chemical drain cleaners safe to use?
More plumbing in Seattle
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