Licensed Septic Companies in Washington
The Septic Guide lists 34 septic companies and licensed septic professionals in Washington (data as of October 2026).
Septic companies by county
Septic services in Washington
Counts of Washington listings by service, from each business's own website or the type of state license it holds.
Who licenses septic work in Washington?
Washington counties certify septic installers; the state licenses designers.
Credentials: County certified installer.
Agency: County health departments (designers licensed by the state).
Other Washington listings
Septic companies and licensed professionals in areas without their own page yet. Listings in the counties and towns above are on those pages.
Clark County 1
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First Call Septic Services
7107 NE Vancouver Mall Dr, Vancouver, WA 98661
From their website: Pumping · Inspection · Repair
Kitsap County 1
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Express Septic Services
10321 J M Dickenson Rd SW, Port Orchard, WA 98366
From their website: Pumping · Installation · Inspection · Drain field · Risers & lids · Grease traps
Lewis County 1
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Washington Septic Services LLC
282 Fuller Rd, Salkum, WA 98582
From their website: Repair · Drain field · Aerobic systems
No listings match those filters.
Septic companies in Washington: common questions
How many licensed septic companies are in Washington?
The Septic Guide lists 34 septic companies and licensed septic professionals in Washington (data as of October 2026).
Do septic contractors need a license in Washington?
Not at the state level. Washington counties certify septic installers; the state licenses designers.
How do I check a septic license in Washington?
Washington has no public statewide list. Washington counties certify septic installers; the state licenses designers.