A person who installs pipes, fixtures and other apparatus to convey and supply water in buildings and to dispose and discharge waste water.

• Carpenter

• Plumber

• Mason

• Mechanic

It is a receptacle or vault used to collect organic waste discharged from the house sewer.

• Septic tank

• Manhole

• Water tank

• Waste tank

The semi-liquid substance accumulated at the bottom of the septic tank.

• Scum

• Sediment

• Sludge

• Silt

An underground tunnel that carries off waste matter from a home or town is called:

• Drainage system

• Fixture

• Sewage

• Sewer

The pipe that conveys blackwater

• Waste pipe

• Soil pipe

• Vent pipe

• Drain pipe

It is a fitting or device that provides liquid seal to prevent the back passage of air.

• Loop

• Fixture

• Sewer

• Trap

The tools used to tighten or loosen hexagonal fittings like unions and other metal fittings.

• Pipe vise

• Pliers

• Wrenches

• Threader

The kind of fitting used to connect fixed pipe and fixtures is a

• Wye fitting

• Coupling

• Union fitting

• Reducer

A fitting or device installed at the inlet of a water pump to prevent backflow of water.

• Ball valve

• Check valve

• Blackwater valve

• Gate valve

It is a device installed in water lines that can be a closed or opened to allow installation or troubleshooting of fixtures.

• Check valve

• Gate valve

• Ball valve

• Float valve