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Sewage & biohazard · Emergency service

Sewage backup cleanup in Seattle, WA

Sewage cleanup treats the water as Category 3 (grossly contaminated): crews in protective gear remove it, discard porous materials it touched, clean and disinfect hard surfaces, and dry the structure. Don't try to clean sewage with household products and a mop.

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Technician in protective coveralls cleaning a living room

Sewage backup cleanup in Seattle: local conditions

Partner coverage for sewage and biohazard cleanup in Seattle currently includes 55 ZIP codes: 98101, 98102, 98103, 98104, 98105, 98106, 98107, 98108, 98109, 98111, 98112, 98113, 98114, 98115, 98116, 98117, 98118, 98119, 98121, 98122, 98124, 98125, 98126, 98127, 98129, 98133, 98134, 98136, 98139, 98141, 98144, 98145, 98146, 98148, 98154, 98155, 98158, 98161, 98164, 98165, 98166, 98168, 98170, 98174, 98175, 98177, 98178, 98181, 98185, 98188, 98191, 98194, 98195, 98198, 98199. If your ZIP is on this list, a call connects you with a company that serves it.

Older parts of Seattle have combined sewers that can back up during heavy storms.

Craftsman and Tudor homes with basements are common, along with many new townhomes and apartments. Many Seattle homes have converted basements or attached accessory dwelling units, so water damage often affects separate living spaces. Newer townhomes have stacked bathrooms and roof decks, where failed membranes and drains lead to leaks. Older homes in Ballard and Wallingford often sit on lots with poor drainage, where basements stay damp most of the rainy season.

What you can expect

  • One call connects you with an independent restoration company that serves your ZIP code.
  • Fast call-back during business hours
  • Serving Seattle, WA
  • Photo and moisture documentation for insurance

Sewage backup cleanup at a glance

Category
Sewage & biohazard
Emergency service
Yes, call for fastest response
Typical first step
Protect
Area
Seattle, WA

Other risks in Seattle

Moisture and mold

Long wet seasons cause mold in basements, attics and bathrooms.

Atmospheric rivers and landslides

Heavy rain saturates hillsides and floods basements.

Earthquake risk

Seattle sits in an active seismic zone, and earthquakes can break pipes.

Older craftsman homes

Seattle's craftsman homes have basements, original plumbing and limited insulation.

Signs you need sewage backup cleanup

  • Water coming up from floor drains, tubs or toilets
  • Gurgling drains
  • Sewage odor in the house

How the work is done

Protect, then Remove, then Disinfect, then Dry. See the full sewage backup cleanup process.

What affects the cost

Prices depend on the job, so restoration companies in Seattle quote after an assessment. The main drivers are how much area is affected, how long it stayed wet, and what has to be removed or rebuilt. See the full list of sewage backup cleanup cost factors.

Sewage backup cleanup questions

Do I need a permit for repairs in Seattle?

Structural, plumbing and electrical repairs need permits from the Seattle Department of Construction and Inspections.

How do I verify a Washington contractor?

Search the Washington Department of Labor and Industries contractor lookup.

Does homeowners insurance cover sewage backup?

Often only with a water or sewer backup endorsement, which most insurers offer as an add-on. Check your declarations page.

Is sewage cleanup dangerous?

Yes. Sewage contains bacteria, viruses and parasites. Professional crews use protective equipment and disinfectants for this reason.

Related pages

Other services in Seattle

More about water and storm damage in Seattle, or see sewage backup cleanup nationwide.

Related services

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Flood damage cleanup

Flood cleanup treats outside floodwater as contaminated: it removes water and mud, cuts out wet drywall and insulation above the waterline, sanitizes, and dries the structure.

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Emergency water extraction

Water extraction is the first step of any water loss: removing standing and absorbed water with powerful pumps and extractors before drying starts.

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Guides

Water, mold or fire damage? Get the right crew on it.

One call connects you with an independent restoration company that serves your ZIP code. Fast call-back during business hours.

(866) 948-3156
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