Currently researching a property that connected to a public sewer system, and realized that understanding the septic history is more important than I originally thought before moving forward like to know what permits were issued whether there have been inspections and if there are any records showing the system layout while searching for information I learned that King County maintains online databases with septic documents such as as-built drawings, permits and inspection history which can be extremely helpful when evaluating a property some people say the records are easy to find while others mention that older properties can require a bit more digging curious how reliable these records usually are and whether they provide a complete picture of a system’s condition has anyone here used septic records in King County when buying or selling a property and did the information help you avoid any surprises later on?