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Death, Crime Scene and Biohazard Cleanup in King County

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King County at a glance

County seat
Seattle
People
About 2,424,700 (state estimate, 2026)

Sources: the county seat from the state Department of Enterprise Services, towns and people from the state Office of Financial Management (opens in a new tab), and each office's own page. Checked October 31, 2026.

This page covers death cleanup, crime scene and trauma cleanup, and other biohazard cleanup across King County, from Seattle and Bellevue to Kent, Renton and Federal Way. In King County, biohazard and trauma cleanup is done by independent private companies that a family, landlord or property manager hires directly. When a death is sudden or unexpected, the King County Medical Examiner’s Office1 acts first, and cleanup can begin only after officials release the property. Biohazard Network can connect you with an independent local company that serves your part of the county.

Biohazard Network is a connector only: it does not clean, and it does not send or supervise anyone. A biohazard is biological material, such as blood or other body fluids, that may carry bloodborne pathogens, which are germs in blood that can cause disease.

The medical examiner acts first

King County uses a medical examiner system. A medical examiner is a public office that investigates deaths to find their cause. The King County Medical Examiner’s Office1 investigates sudden, violent, unexpected, and suspicious deaths that occur in King County, and its web page sits under Public Health – Seattle & King County2. Under RCW 68.50.010, jurisdiction over the deaths that law lists, including deaths from unknown causes and deaths under suspicious circumstances, rests with the county coroner or medical examiner.

At the scene, the investigation includes photographs, evidence collection, and information from family and other witnesses, so nothing should be cleaned or moved yet. Scene release is the point when police or the medical examiner tell you they are finished and the property is back in your control. Ask the investigator whether that has happened before you call a cleanup company. For questions about an investigation, the King County Medical Examiner’s Office1 lists 206-731-3232, ext. 5, as its death investigation line, available 24/7.

While the examination is under way, you will be asked to choose a funeral home or crematory, and the office asks families to decide within 3 days. Personal effects collected during the investigation go to that funeral home, so ask there about belongings. Families are not charged for the investigation or examination. Evidence that contributed to the death is not released to the family; it goes to the investigating law enforcement agency.

When Public Health – Seattle & King County matters

Public Health – Seattle & King County2 is the county health department, and its main phone number is 206-296-4600. Several of its programs connect to cleanup:

  • Biomedical waste and sharps. Biomedical waste is a legal category in Washington that includes discarded human blood and sharps waste, meaning used needles, syringes, scalpel blades and lancets. If you find a needle first, the department has guidance on how to handle used or found sharps.
  • Septic and sewage. If a septic system or sewage spill is part of the problem, see its On-site Sewage/Septic System Program and its information on sewage releases in Seattle and King County.
  • Mold. The department offers mold education but does not conduct mold assessments; how biohazard cleanup fits with water, fire and mold restoration explains where those jobs overlap.
  • Rodents and unsafe housing. The department takes rodent complaints. State law also requires a local health officer to prevent, control or abate nuisances that harm public health, and cities may adopt rules on dwellings that are unfit because of problems such as uncleanliness or inadequate sanitary facilities.

Reaching the property

Water and highways shape how a company reaches you, so describe the location clearly. Only two transportation facilities cross Lake Washington: the I-90 and SR 520 floating bridges. I-90 links Seattle with Mercer Island and the Eastside, and SR 520 links Seattle with the cities on the lake’s east side. I-405 and SR 167 form the only north-south highway alternative to I-5 in the region.

Vashon/Maury Island is reachable only by water, and the Fauntleroy ferry terminal carries riders between West Seattle, Vashon Island and the Kitsap Peninsula, so ask whether a company serves the island. Rural Snoqualmie Valley/Northeast King County surrounds Duvall, Carnation, Snoqualmie, North Bend and Skykomish, plus Fall City and Snoqualmie Pass. Rural Greater Maple Valley/Cedar River lies east of Renton and Kent and extends to the Kittitas County line. In either area, give the nearest town and ask whether the company covers it.

Once the scene is released, arranging cleanup soon helps, because porous materials, meaning surfaces like carpet and drywall that soak up liquids, get harder to clean over time.

If the home involves hoarding

Hoarding is a recognized condition, and the person living in the home should decide what to let go. Ask any company how it includes that person or the family when sorting belongings. Regional Animal Services of King County (RASKC) covers unincorporated King County and 25 contracting cities, including Bellevue and Kent, while the Seattle Animal Shelter, Renton Police Department Animal Control and the City of Federal Way’s Animal Services Unit serve those cities. For an older adult or a person with a disability, Aging and Disability Services (ADS), the Area Agency on Aging for Seattle and King County, can be asked about support.

Paying for cleanup

Homeowners insurance sometimes covers this work, so ask your insurer what your policy includes. Ask each company for a written estimate and whether it will work with your insurer.

Usually covered: Homeowner insurance protects your home and belongings from damage caused by specific risks, says the Insurance Commissioner’s page on how home insurance works3. Personal property coverage includes your furnishings and personal items, such as your TV, clothing and dishes, the same page says.

Usually not covered: Exclusions in home contracts may include certain events, such as flood or earthquake, says the Insurance Commissioner’s insurance glossary4. Standard homeowner policies also do not cover sewer or drain backups, says the Commissioner’s page on being underinsured5.

Ask your insurer: “Without filing a claim yet, can you tell me if my policy covers biohazard cleanup in my home, and what limits apply?” Source: Filing a homeowner insurance claim (Washington State Office of the Insurance Commissioner)

Checking a company

Ask any company how its crew follows OSHA’s bloodborne pathogens standard, 29 CFR 1910.1030, and the ANSI/IICRC S540 Standard for Trauma and Crime Scene Cleanup, published by the Institute of Inspection Cleaning and Restoration Certification (IICRC), a non-profit organization for the cleaning and restoration industries. Then look the business up in the Washington State Department of Labor & Industries (L&I) tool, Verify a Contractor, Tradesperson or Business, and read the certifications guide for what each one means.

Cities in King County

  • Seattle is an incorporated city that includes Discovery Park and Pike Place Market.
  • Bellevue is an incorporated city with Bellevue Downtown Park and the Bellevue Botanical Garden.
  • Kent is an incorporated city with the accesso ShoWare Center and the Green River Natural Resources Area.
  • Renton is an incorporated city with Gene Coulon Memorial Beach Park and the Renton Highlands neighborhood.
  • Federal Way is an incorporated city served by I-5 and State Highways 18, 99 and 509, with Celebration Park and Steel Lake Park.

For other counties, start from the Puget Sound overview.

Who to call first

In an emergency, call 911.These official offices may be part of the first steps. They are government pages, not ours.

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What this covers

Unattended death

Unattended death cleanup means cleaning a home after someone died and was not found right away. When someone is found after they have died, RCW 68.50.010 gives the county coroner or medical examiner jurisdiction over the body.

The details, if you want them

OSHA said in a 2007 letter that its Bloodborne Pathogens standard is concerned with exposure to blood no matter how long the blood has been exposed to air. The same letter says there are studies stating that the hepatitis B virus is likely to survive on surfaces for longer than two weeks.

Suicide

Suicide cleanup means cleaning the place where someone died by suicide. Grief support: 988 (call or text, free, any time).

The details, if you want them

The 988 line offers live help in English and Spanish, and interpretation in more than 240 languages and dialects, the Department of Health says.

Crime or trauma scene

Crime or trauma scene cleanup means cleaning a home, business or other place after a violent crime, a serious accident or another traumatic event. An industry standard for this work, IICRC S540, sets out the procedures and precautions to follow. It assumes law enforcement or a regulatory agency has already released the scene.

The details, if you want them

OSHA addressed in a 2020 letter how its Bloodborne Pathogens and HAZWOPER (Hazardous Waste Operations and Emergency Response) standards apply to crime and trauma scene cleanup in homes and businesses. Under OSHA’s Bloodborne Pathogens standard, regulated waste includes liquid or semi-liquid blood, items that would release blood if squeezed, and items caked with dried blood that can release it when handled.

Blood and bodily fluids

Blood and bodily fluid cleanup means cleaning up blood or other body fluids after an injury, an illness or a death. Washington’s workplace rule on blood (WAC 296-823-099) describes treating all human blood and certain body fluids, whoever they came from, as if they carry HIV, hepatitis B and other germs carried in blood.

The details, if you want them

Professionals call this approach universal precautions. Under WAC 296-823-100, the rule applies to employers whose workers have occupational exposure to blood or other potentially infectious materials (OPIM), even if no exposure incident has happened. WAC 296-823-099 defines bloodborne pathogens as germs in human blood that can cause disease, such as HIV, hepatitis B and hepatitis C.

Hoarding

Hoarding cleanup means clearing and cleaning a home where belongings have built up over time. The U.S. Fire Administration says belongings that fill a living space until it can no longer be used create fire risks for the people who live there and for firefighters. It advises keeping doorways and windows clear, for escape in a fire and to prevent injuries from falls.

The details, if you want them

A 2012 National Institute of Mental Health science update describes hoarding disorder, then a proposed category in psychiatry’s diagnostic manual (DSM-5), as marked by avoiding decisions about possessions. The U.S. Fire Administration says blocked windows and doors make it hard for firefighters to get into a home to fight a fire and search for the people inside.

Sewage

Sewage cleanup means cleaning up after a toilet, drain or sewer line backs up into a home or building. Raw sewage carries bacteria, viruses, parasites and intestinal worms, the EPA says. Washington’s Department of Health says indoor sewage spills need thorough cleaning, started as soon as possible, to protect people, especially small children.

The details, if you want them

The EPA says rugs, curtains, flooring, wallboard and upholstered furniture that come into contact with sewage usually must be replaced.

Infectious disease

Infectious disease cleaning means cleaning and disinfecting a home or workplace after an illness that can spread.

The details, if you want them

The EPA defines cleaning as removing dirt and organic matter from surfaces with soap or detergents, and disinfecting as killing viruses and bacteria on surfaces with chemicals. It says to follow the label on EPA-registered disinfectants and to pay attention to the contact time, which is how long the surface must stay wet.

Rodent and animal waste

Rodent and animal waste cleanup means removing droppings, urine and nests left by mice, rats or other animals. Washington’s Department of Health says a person may be exposed to hantavirus by breathing contaminated dust after disturbing or cleaning rodent droppings or nests. The Department of Health’s rodent guidance says not to vacuum or sweep around rodent waste, and that homeowners should consider hiring a professional company for heavily contaminated areas.

The details, if you want them

Because you cannot tell how old a dropping is, the Department of Health says to handle all rodent droppings as if they are infectious. For heavy infestations, the Department of Health’s rodent guidance says to wear respiratory protection, such as a half-mask respirator with a HEPA filter or a powered air-purifying respirator (PAPR).

Drug residue

Drug residue is what is left on surfaces where people used illegal drugs. Washington’s Department of Health says testing and cleanup at illegal drug labs and drug storage sites are regulated under state law. See our guide to drug lab cleanup.

The details, if you want them

Under WAC 246-205-091, a contractor may do decontamination, demolition or disposal work at an illegal drug manufacturing or storage site only after getting a certificate from the state health department. The Department of Health says it has no policy on when to test for residue from drug use, and that your local health officer decides whether an area is considered contaminated.

Vehicle cleanup

Vehicle cleanup means cleaning blood or other biohazards inside a car, truck or boat. This can follow an accident, a crime or a death in the vehicle.

Questions people ask

Who handles cleanup after a homicide or suicide in King County?

A private cleanup company that the family or property owner hires. Police or the King County Medical Examiner's Office1 must release the scene first. You do not have to clean it yourself.

Who cleans up after someone dies at home in King County?

An independent private cleanup company does the work, and the family, landlord or property manager hires it directly. If the death was sudden, violent, unexpected or suspicious, the King County Medical Examiner's Office1 investigates first. Cleanup begins only after officials release the property.

When can cleanup start after a death in King County?

Cleanup can start once police or the King County Medical Examiner's Office1 release the scene, which means they are finished and the property is back in your control. Until then, nothing should be cleaned or moved. Ask the investigator directly whether the scene has been released before you contact a company.

Does homeowners insurance cover biohazard cleanup in King County?

Homeowners insurance sometimes covers this work, but it depends on your policy. Call your insurer and ask what is included. Ask each cleanup company for a written estimate and whether it will work with your insurer, rather than assuming it will.

Usually covered: Homeowner insurance protects your home and belongings from damage caused by specific risks, says the Insurance Commissioner’s page on how home insurance works3. Personal property coverage includes your furnishings and personal items, such as your TV, clothing and dishes, the same page says.

Usually not covered: Exclusions in home contracts may include certain events, such as flood or earthquake, says the Insurance Commissioner’s insurance glossary4. Standard homeowner policies also do not cover sewer or drain backups, says the Commissioner’s page on being underinsured5.

Ask your insurer: “Without filing a claim yet, can you tell me if my policy covers biohazard cleanup in my home, and what limits apply?” Source: Filing a homeowner insurance claim (Washington State Office of the Insurance Commissioner)

How is biohazard waste from a cleanup disposed of in King County?

Biomedical waste includes discarded human blood and used sharps such as needles. Ask the company you hire how it will dispose of what it removes.

Who can help with pets or an older parent in a King County hoarding situation?

For pets, Regional Animal Services of King County covers unincorporated King County and 25 contracting cities, while Seattle, Renton and Federal Way have their own animal services. For an older adult or a person with a disability, Aging and Disability Services (ADS), the Area Agency on Aging for Seattle and King County, is a place to ask about support.

Sources

  1. Medical Examiner's Office (opens in a new tab)King County
  2. Public Health – Seattle & King County (opens in a new tab)King County
  3. Learn how home insurance works (opens in a new tab)Washington State Office of the Insurance Commissioner
  4. A consumer's insurance glossary (opens in a new tab)Washington State Office of the Insurance Commissioner
  5. The risk of being underinsured (opens in a new tab)Washington State Office of the Insurance Commissioner

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