Septic Tank is a very important thing for some home owners, the process that the water used in houses go through is not on the minds of most of the people using them, most people just turn the water on and off without thinking about what happens to the water and where the waste of these dirty water goes. The top reasons why you should have your septic tank pumped out regularly and possible consequences of not doing so on a regular basis. Septic Systems have been placed in roughly six in ten homes of the United States. Especially in the great Northwest territory of Washington State and especially in King County Wa, where septic systems are plentiful.