Most of the on-site sewage system (OSS) record drawings, also known as as-builts, dating from 1998 are available online. The record drawings include both new construction and repairs to failing systems. Many older records are available but may not be as accurate, legible, or detailed as recent record drawings, as regulations have become more prescriptive.
Search utility to find King County parcel information. You can search by address, search by parcel number, or you can just zoom in on the map and click on a parcel.
View King County spatial information (GIS data and images) in an interactive map display. You can customize your map display to show just the information you want to see at the best scale for your chosen purpose.