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Licensed Septic Contractors Based in King County, WA
85 licensed septic contractors based in King County. Every license number below is sourced from official Washington records, with a link to verify it yourself.
Grouped by the county of the address on each business's state license record, which can be a mailing address; it doesn't tell you where the business works. Where the record doesn't name the county of the address, its ZIP code decides (a ZIP that crosses a county line goes to the county holding most of its homes), then its town.
Need septic pumping, cleaning, repair, inspection, or installation work quotes in King County? Request free quotes and we'll route your request to local septic contractors.
Septic Contractors based in King County (85)
Lilly's Septic ServiceLicensed
Monica Rose RoppoLicensed
SSB Septic Service LLCLicensed
Zellerhoff ConstLicensed
Columbia Land ServicesLicensed
George T StreepyLicensed
Neighbors Septic ServiceLicensed
5 Star Septic, Sewer & Storm IncLicensed
Barry James ColeLicensed
Jarone A BakerLicensed
Alberta Septic SystemsLicensed
Fresh 'n' Clean SepticLicensed
AAA Septic & Plumbing LLCLicensed
Palensky DozingLicensed
Active Septic SolutionsLicensed
Lewis Roggenbuck Const LLCLicensed
Northlake Concrete ProductsLicensed
Streepy Septic Design LLCLicensed
Evan D DobrowskiLicensed
Aqua Test IncLicensed
Greentree DozingLicensed
Green LatrineLicensed
Warranty SepticLicensed
Liana Elizabeth CriscuoloLicensed
Potential Energy IncLicensed
SSB SepticLicensed
Kyla LaRee LeyendekkerLicensed
Walker Septic & Design & RepairLicensed
McNel Septic ServiceLicensed
Corrina Lin MaroteLicensed
Septic Response LLCLicensed
Puget Sound SepticLicensed
Scotts SepticLicensed
TPJ Inc. (The Plumbing Joint)Licensed
Stuth CompanyLicensed
SRP Excavating LLCLicensed
Enumclaw ExcavatingLicensed
Uncle Johns LLCLicensed
Warranty Septic ServiceLicensed
Daniel Dean WalkerLicensed
A-Advanced Septic ServicesLicensed
5 Star Septic Sewer & Strm IncLicensed
A-Advanced Septic ServicesLicensed
Si View Septic PumpingLicensed
Puget Sound Septic DBA Yuk TruckLicensed
Lone Mountain Construction, LLCLicensed
Niece Pumping ServiceLicensed
Mark P TooleyLicensed
Mike's Materials LLCLicensed
Vashon SepticLicensed
Drain Beast Plumbing & SepticLicensed
Fast CatsLicensed
AAA Septic & PlumbingLicensed
Earthwise EnterprisesLicensed
Fresh N CleanLicensed
A & H Septic SystemsLicensed
A-Adcanced Septic ServiceLicensed
Mountain View Const IncLicensed
Margarita Alexeevna AnkoudinovaLicensed
A1 Septic and Plumbing LLCLicensed
Christina ScammonLicensed
G & N Septic Tank Service LLCLicensed
Sunset Septic Tank CoLicensed
Jamies Septic ServiceLicensed
Diamond Septic LLCLicensed
Pinnacle Peak ConstructionLicensed
Baker CommoditiesLicensed
AAA Septic & PlumbingLicensed
A Team Septic SolutionsLicensed
Love SepticLicensed
A Advanced Septic ServiceLicensed
MAX Allen TOOLEYLicensed
Northwest Septic Services LLCLicensed
David Mark LoweLicensed
Licensed by King County
King County issued these businesses' licenses, but the address on their license record is not in King County.
A WescoLicensed
A Wesco Septic ServiceLicensed
Above All ConstLicensed
Advanced Sewer Solutions IncLicensed
All Around UndergroundLicensed
All Septic and SewerLicensed
BOSCO Septic & Sewer LLCLicensed
Babbitt Construction Co LLCLicensed
Babbitt Septic Design IncLicensed
Bailey Sewer SepticLicensed
Bravo Enterprises IncLicensed
Bumblebee ServicesLicensed
Class Act Septic & ExcavationLicensed
Clean Septic Pumping, LLCLicensed
DTG Enterprises Inc.Licensed
Drain Pro IncLicensed
Economy Septic Service IncLicensed
Elledge Land DevelopmentLicensed
Elledge, Conrad CLicensed
EnviroTechLicensed
EnviroTech Septic SolutionsLicensed
Evergreen SanitationLicensed
FloHawksLicensed
Goodfellow Bros.LLCLicensed
Greenworks of WashingtonLicensed
HSCC1, Inc.Licensed
Harding & SonsLicensed
J&A ContractingLicensed
J&A Contracting LLCLicensed
JSM Dirt and SanitationLicensed
Jim Campbell & Sons IncLicensed
KMJ Excavating, LLCLicensed
Lakeside Septic Inc.Licensed
Lee's Sanitation ServiceLicensed
NW Septic ServicesLicensed
Northrup ConstructionLicensed
Northshore School DistrictLicensed
Northwest Cascade Inc.Licensed
Raburn Contracting Services, LLCLicensed
Robinson's Septic ServiceLicensed
Schleg Valley ConstructionLicensed
Septic ProsLicensed
Septic SolutionsLicensed
Septic TechnologyLicensed
SepticosLicensed
Sterling Septic & Plumbing LLCLicensed
Sultan Pumper SepticLicensed
Superior Septic Service LLCLicensed
The Septic GroupLicensed
The Septic Group (Series Seven)Licensed
Trinity Septic CareLicensed
Veteran Pumping & Septic LLCLicensed
Zak Septic LLCLicensed
A Wesco SepticLicensed
Above Grade SepticLicensed
S V Greso INCLicensed
Sno Valley Underground, LLCLicensed
Cities in King County
Aubrun 2Auburn 16Bellevue 1Carnation 1Covington 2Enumclaw 6Fall City 1Federal Way 1Hobart 2Kenmore 1Kent 6Kirkland 2Maple Valley 8Milton 1Newcastle 1North Bend 4Ravensdale 5Renton 4Seattle 9Vashon 8Woodinville 4
Hiring a septic contractor in King County
Septic (onsite wastewater) contractors handle everything from routine septic tank pumping and cleaning to repairs, inspections, and new system installation. States license each role separately (a pumper is not necessarily licensed to install, and vice versa), so match the license class to the job.
Before you sign anything: confirm the license number on this page is still active with Washington, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.