What are the main components of an on-site sewage disposal system?
An on-site sewage disposal system consists of the pipe that connects the plumbing in the house to the septic tank, the septic tank and the disposal field. Sewer Line The pipe from your home to the septic tank should be a non-perforated, rigid, smooth-bore, certified sewer pipe with sealed joints. For most installations, to drain sewage to your septic tank by gravity and allow for the proper grade on your disposal field, the sewer pipe will exit your home approximately 2′ below the final grade of your lot at the foundation wall. Care should be taken when covering this pipe. ( If you have a plugged sewage disposal system, the sewer pipe between the building and the septic tank is often the first thing the contractor checks to see if it is blocked or broken.) Septic Tank A septic tank is a watertight container constructed of a sound, durable material such as polyethylene, fiberglass or concrete which is not subject to corrosion or decay. The main function of the septic tank is to separate
