Seattle’s water comes from the Cedar and Tolt river watersheds and is soft, so hard-water scale is rarely a problem. The bigger issues are water management in a rainy climate — basements, crawl spaces and drainage — along with Washington’s seismic strapping requirement for water heaters and occasional cold snaps that freeze exposed pipes.
Housing & construction
Craftsman bungalows and foursquares on hillsides, mid-century homes, townhomes and apartment buildings across a growing city.
Plumbing services in Seattle
Sewer Line Repair in Seattle
Street permits
Seattle sewer line repair →
Drain Cleaning in Seattle
Root regrowth
Seattle drain cleaning →
Water Heater Replacement & Installation in Seattle
Seismic strapping
Seattle water heater replacement & installation →Also common in Seattle: sump pump repair.
Common plumbing problems in Seattle
What makes Seattle plumbing different
Side sewer responsibility
The owner’s side sewer usually runs to the public main, sometimes under the street, so repairs can involve street permits.
Soft water
Cedar and Tolt river water is soft; scale is uncommon.
Rain and drainage
Long wet seasons stress basements, crawl spaces and drainage systems.
Seismic strapping
Washington requires water heaters to be strapped against earthquakes.
Seasonal plumbing calendar for Seattle
- Rainy season (fall–spring)Check sump pumps, crawl space drainage and downspouts.
- Winter cold snapsOccasional hard freezes burst pipes in crawl spaces and exterior walls; insulate exposed runs.
Plumbing emergency in Seattle?
- Close the main water shutoff, or the fixture valve if the problem is in one place.
- Stay away from water near outlets or the electrical panel.
- For sewage backups, stop using all drains.
- If you smell gas, leave and call the gas utility or 911 from outside.
Seattle plumbing questions
Who owns the side sewer in Seattle?
Property owners are generally responsible for the side sewer from the house to the public main, including any part under the street.
Is Seattle water hard?
No. Seattle’s mountain watershed water is soft, so scale is rarely an issue.
Do Seattle water heaters need earthquake straps?
Yes. Washington’s plumbing code requires seismic strapping of water heaters.
Do pipes freeze in Seattle?
Occasionally. Hard freezes can burst pipes in crawl spaces, garages and exterior walls, so insulating exposed pipe is worthwhile.
Nearby service areas
We also serve communities around Seattle, including Bellevue, Shoreline, Renton, Kirkland, Burien, Edmonds, Tacoma.
