Sewage is the term used to refer to the system which is used to accommodate human waste. All of the homes in the neighborhood have a common pipeline which is connected to the water closets of all of the houses. This common pipeline allows all the waste from water closet pipes to continue flowing to the common sewage system in the neighborhood. All the waste then goes to the common sewage system, and they are collected in the public sewers which are located underground. This keeps the sewage system away from direct human contact, and all people are protected from the effects of raw sewage to the health.