Look up your King County, WA
Septic Tank As-built
King County WA Septic Tank As-built
In King County, WA, most homes built after 1970 have a septic tank as-built record on file with King County Public Health. As a home owner, you should be some what well versed on the basics regarding your septic system; like the location and the type of septic system you have. Your septic tank as-built is a great resource to have handy in the event you need to access your septic tank system or if you’re having your system serviced.