The following are links to information by county for looking up property parcel/tax numbers, asbuilts, online reports (RME). and the Washington On-Site Sewage Association (WOSSA). You can use these links to research specific property information and general information related to on-site systems for the listed counties.
See below for the links for county web sites and for Septic as-builts.
Directions: Find Property – Hit “Map Sifter” – go into “Land Records”
Look up all reports filed in RME — Also find Kitsap County as-builts
Directions: Find Property – click on “Get Info” on right-hand side and click on “View Scanned Images”