ClipArt ETC
The waste water from the various appliances, fixtures, and taps is transferred to the waste and sewage removal system via the sewage drain system. This system consists of larger diameter piping, water traps, and is well vented to prevent toxic gases from entering the living space. The plumbing drains and vents article discusses the topic further, and introduces sewage treatment.

Waste Water Trap Pipe

The waste water from the various appliances, fixtures, and taps is transferred to the waste and sewage…