What should I do if I suspect a problem with my septic system?

Don't hesitate to call a professional. Addressing problems sooner rather than later helps to extend the life of the system and avoid contact with raw sewage. Most problems can be corrected with minor repairs. If a major repair or redesign of the system is required, King County will coordinate with the septic professional on permitting.

Who should I call?

On Vashon, there’s:

 Greentree Dozing (206-463-3889) offers:

  • Maintenance Inspections 

  • Time of Sale Reports

  • Camera locates

  • Alarm response & diagnosis

  • Pump replacements & general system component repairs

  • Tank replacements

  • Tank pumping & abandonment

  • Design coordination

  • operations & maintenance agreements


Niece Pumping (206-463-5969) offers:

  • Pumping

  • Inspections

  • Routine maintenance

  • Referrals to other professionals

  • operations & maintenance agreements

In addition to Niece and Greentree, these on-island licensed installers also do repairs:

Lewis Roggenbuck Construction (206-463-5828)

Potential Energy (206-794-9809)

Mikes Materials (206-914-3532)

Vashon Septic/Dave Creighton (206-391-1185)

Zellerhoff Construction (206-463-6161)

If you’re looking beyond Vashon, here are few service providers who come to Vashon for maintenance, service and inspections. Note stars next to vendor who also pump tanks:

**All Septic and Sewer/Puyallup (253-677-5269)

A Advanced Septic Services/Auburn (253-435-9999)

Alpha Bravo Septic & Drainage/Tacoma (253-777-2829)

**FloHawks Plumbing & Septic/Graham (253-393-2555)

Off-island service providers who install and repair:

Alpha Bravo Septic & Drainage/Tacoma (253-777-2829)

FloHawks Plumbing & Septic/Graham (253-393-2555)

Check out King County Certified On-Site System Maintainers (OSM) for a full list of certified septic professionals and the services they offer.