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A-Advanced Septic ServicesLicensed

Licensed septic contractor based in Aubrun, King County, WA

License details

Company	Brian Chapin
License number	166
License type	Onsite System Maintainer
License status	Active, King County certified onsite system maintainer
Based in	Aubrun, King County, Washington 98001
Licensed by	King County

"Based in" is the city and county of the address on the business's license record.

What this license covers

Pumping / cleaning: licensed to pump out and clean septic tanks, service them, and haul the waste.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #166 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: King County Public Health - Onsite System Maintainers, last checked 2026-08-19. Look it up at the issuing agency.

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