Drain and Sewer Terminology to Know
There are many words and phrases used in the plumbing and drainage industry that experts use when describing their work. It’s easier to make an educated decision when you understand the common terminology.
A pipeline installed to discharge into a junction on another pipeline or at a point of access such as an access junction, inspection chamber or manhole.
Overflow of a plumbing fixture due to drain stoppage.
A pit formed of concrete or brickwork in which sewage is allowed to collect. The pit will be periodically emptied using purpose-made hydraulic equipment.
A plug in a trap or drain pipe that provides access for the purpose of clearing an obstruction.
A pipe system that drains wastewater from the bathroom and vents the drain system.
Water discharged after being used in households or in a process. Wastewater is now the international definition.
Either a pipe or cable—a primary distribution system, normally located beneath an adaptable area such as a footway or service zone.
A working chamber with cover constructed on a drain or sewer within which a person may inspect, test or clear and remove obstructions.
A purifier for sewage where no sewer is available. It is a tank through which sewage flows slowly enough for it to decompose and be purified. It is divided into two or more chambers separately by scum boards.
Water-borne human, domestic and farm waste. It may include trade effluent, subsoil or surface water.
Valves installed under sinks and toilets used to shut off water supply in the event of a malfunction or repair. Also called an Angle Stop, Straight Stop or Supply Stop.
Surface water from heavy rainfall combined with wastewater diverted from a sewer by a stormwater overflow.