Septic Services in Seattle, WA
Seattle septic services typically range from $474.65 to $475.45 depending on the service type and tank size. Compare 35 contractors below.
Septic Contractors in Seattle

Puget Sound Septic
✓ VerifiedSeptic pumping and inspection services in Maple Valley, WA, including tank installation, servicing, and emergency repairs. Emergency services available.

Pro Sewer Repair
✓ VerifiedExpert sewer and drain cleaning, repair, and inspection services for Seattle area homes and businesses. Offering trenchless solutions, pipe bursting, and water line repair since 2017.

Brewer's Sewer Repair
✓ VerifiedBrewer Sewer Repair provides sewer and drain services including repairs, replacements, and emergency repairs. They are a licensed company serving the Seattle, WA area.

Knight Rooter Sewer & Drain Cleaning Services
✓ VerifiedSewer and drain cleaning services in Seattle, WA, offering 24/7 emergency repairs for sewer lines, drain pipes, and trenchless replacements. Services include hydro jetting and camera inspections.

Clearline Sewer Repair
✓ VerifiedSewer and drain repair specialists in Seattle, WA offering trenchless and traditional repair methods for residential properties.

Amman Septic Designs Inc.
✓ VerifiedTooley Septic Design is a septic system design company in King County, WA that specializes in innovative septic designs for new construction, repair designs, and subdivision projects.

Pacific Custom Sewer and Drainage
✓ VerifiedProviding expert sewer line repair, replacement, and drain cleaning services in Seattle, WA. We offer trenchless solutions, hydro jetting, and emergency plumbing, including sump pump installation and repair.

Upfront Septic & Plumbing
✓ VerifiedProviding comprehensive septic services including pumping, inspection, repair, and installation in Seattle, WA. We offer transparent, upfront pricing for all drain field and sewer line needs.

2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air
✓ Verified
Fresh N Clean Septic
✓ VerifiedProviding professional septic system inspection, pumping, cleaning, maintenance, and repair services in Woodinville and the greater Snohomish and King Counties area. Fresh N Clean Septic focuses on customer education and environmental responsibility.

Septic Solutions LLC
✓ VerifiedThe company provides professional septic system installation, upgrades, and maintenance. They offer 24/7 emergency septic repair services.

Septic Response
✓ VerifiedSeptic Response provides septic tank maintenance, pumping, and pump replacement services in Kirkland.

Septic Response Plumbing & Sewer
✓ VerifiedSeptic Response provides residential septic inspection services in Snohomish County. They employ licensed inspectors to perform these inspections.

Blackwater Services - Septic System Service
✓ VerifiedBlackwater Services is a licensed, insured, and women-owned septic company that specializes in septic pumping, repair, inspection, new system installation, and aerobic treatment unit (ATU) maintenance. They offer a protection-first model featuring system health scoring, predictive risk assessments, and proactive maintenance plans.

ACES FOUR Enterprises - Sewer Repair & Replacement
✓ VerifiedAces Four is a family-owned excavation and underground utility contractor that has been serving the Greater Seattle area since 1978. They specialize in sewer, drainage, water-line, excavation, and demolition services.

All County Septic Service
✓ VerifiedSeptic services including pumping, repairs, installation, and inspections in Everett, WA, with 24/7 emergency availability.

Sunset Septic Tank Co
✓ VerifiedSunset Septic Tank Co. provides pumping, installation, and repairs for homes and businesses in King and Kittitas County.

seattle drain service
✓ VerifiedSeattle Drain Service is an underground utility and drainage contractor specializing in the repair, installation, and cleaning of sewers, French drains, and trench drains. They utilize trenchless methods such as pipe bursting and lining to perform repairs without excavating yards.

Everett Grease Trap Services
✓ VerifiedEverett Grease Trap Services specializes in grease trap cleaning services. They provide pumping and cleaning for grease traps and interceptors.

Cuz Concrete Products, Inc.
✓ VerifiedCuz Concrete Products offers septic system services and precast concrete products in Arlington, WA.

The Grease Group
✓ VerifiedGrease trap, interceptor, and holding tank cleaning services for restaurants and food businesses in Lake Stevens, WA. Emergency services are available.

A Advanced Septic & Construction Services
✓ VerifiedA Advanced Services provides septic, electrical, and construction services. They serve multiple cities in Washington state.

Mr. Rooter Plumbing of Seattle
✓ VerifiedChain plumbing company specializing in residential and commercial jobs such as drainage issues, leaky pipes, blocked drains, and faucet replacement.

AAA Septic & Plumbing LLC.
✓ VerifiedSeptic and plumbing services including pumping, repair, and installation for drainfields and sewer lines in Auburn, WA.

Jafco Plumbing and Sewer
✓ VerifiedFull-service plumbing and sewer company offering repair, maintenance, and installation for residential and commercial properties in Seattle, WA and surrounding areas.

Sewer Friendly
✓ VerifiedSewer Friendly provides sewer and water line inspection, repair, and replacement services. They specialize in trenchless sewer repair and drain cleaning.

Green Planet Plumbing & Sewer, LLC
✓ VerifiedGreen Planet Plumbing & Sewer delivers responsible, eco-friendly plumbing solutions.

Green Latrine
✓ VerifiedProviding porta potty rentals and RV pumping services in Seattle, WA. Offers standard and accessible portable restrooms, luxury trailers, and weekly cleaning and servicing for events and job sites.

A Wesco Septic Services
✓ VerifiedA Wesco Septic, Inc. is a second-generation family-owned business providing septic services including pumping, inspections, and repairs. They offer 24/7 emergency dispatch and have been operating since 1989.

Klein Septic Service
✓ VerifiedKlein Septic Service provides septic pumping, inspections, and repairs in Arlington, WA.

Express Septic Services
✓ VerifiedExpress Septic Service is a family-run, full-service septic company serving Kitsap, Pierce, and North Mason counties. They are licensed, bonded, and insured.

Seattle Grease Trap Services
✓ VerifiedProviding grease trap and interceptor pumping, cleaning, installation, and repair services for commercial kitchens and industrial facilities in Seattle. We also offer used fryer oil recycling.

A1 Septic Service
✓ VerifiedA1 Septic Service is a family-owned business that has been operating since 1998. They provide septic tank pumping, inspections, and repairs with same day or next day service availability.

Evergreen Sanitation
✓ VerifiedProviding comprehensive septic services including pumping, cleaning, repair, and replacement in Lake Stevens, WA. Evergreen Sanitation also offers grease trap cleaning, real estate inspections, and porta potty rentals.
Evergreen Sanitation Inc
✓ VerifiedProviding comprehensive septic services including pumping, cleaning, repair, and real estate inspections for Seattle and western Washington residents and businesses since 1957. Also offering grease trap cleaning, sump pump replacements, and portable toilet rentals.
Greater Seattle’s septic market is concentrated in Snohomish, Pierce, Thurston, and Kitsap counties, where tens of thousands of homes outside municipal sewer service areas depend on onsite wastewater treatment. The Puget Sound region’s environmental sensitivity drives some of the most rigorous septic oversight in the western United States. Washington’s Department of Health sets statewide standards, while local health jurisdictions — including the Snohomish Health District, Tacoma-Pierce County Health Department, and Thurston County Environmental Health — administer permitting, inspection, and enforcement programs tailored to their specific geographic and environmental conditions.
The Pacific Northwest’s wet climate is the defining factor for septic system performance in the Seattle metro. Annual precipitation ranges from 37 inches in the city to over 50 inches in foothill areas, with the majority falling between October and April in prolonged, steady rain events rather than intense storms. This creates extended periods of soil saturation that challenge drain field capacity, particularly in the region’s glacial till soils — dense, compacted clay and gravel deposits left by the Cordilleran ice sheet. Sandy outwash soils in river valleys drain well, but the till soils that cover much of the upland areas require careful system design, often incorporating pressure distribution or sand-lined drain fields. The region’s mild winters rarely produce deep frost, but constant moisture is a more persistent stressor than freezing.
Pump-out pricing in the Seattle metro typically ranges from $425 to $525 for a standard 1,000-gallon tank, reflecting the region’s higher labor and operating costs. The environmentally conscious market creates strong demand for advanced treatment technologies, and many jurisdictions require enhanced nutrient removal for systems near Puget Sound or its tributaries. Gravity systems, pressure distribution fields, mound systems, and sand filters are all common across the metro. Communities like Lake Stevens, Yelm, Graham, Bonney Lake, and Stanwood have some of the highest septic densities in the region, and homeowners in these areas should expect regular monitoring requirements and plan for pump-outs every three to five years.
Frequently Asked Questions
How much does septic tank pumping cost in Seattle?
Septic tank pumping in Seattle averages around $475.00. Prices typically range from $474.65 to $475.45 depending on tank size, access difficulty, and whether emergency or weekend service is needed.
How often should I pump my septic tank in Seattle?
Most households should pump their septic tank every 3-5 years. Factors that affect frequency include household size, tank capacity, water usage, and use of garbage disposals. A Seattle septic professional can recommend an appropriate schedule based on your system.
What are signs of septic system problems?
Warning signs include slow drains throughout the house, sewage odors in the yard or home, standing water or soggy spots near the drain field, gurgling sounds in plumbing, and unusually green grass over the drain field. If you notice these signs, contact a Seattle septic contractor promptly.
What does septic pumping include in Seattle?
Septic pumping in Seattle includes locating and uncovering the tank access lid, pumping out all solid and liquid waste, inspecting the tank interior for cracks or damage, and checking inlet and outlet baffles. Most Seattle contractors charge around $475.00 for a standard pump-out and inspection.
How do I find a reliable septic pumping service in Seattle?
Look for licensed, insured contractors with strong local reviews. Seattle has 35 septic service providers listed on PumpLocal — compare ratings, pricing, and services to find the right fit. Ask about response times, tank size limits, and whether they include a post-pump inspection.
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