plumbing
plum-bing
noun
The work or trade of installing and repairing water and drainage systems.
"He works in plumbing, installing new bathrooms."
noun
The system of pipes, tanks, and fittings for water and waste in a building.
"We need to fix the plumbing in the bathroom."
Thesaurus
Synonyms: plumbery, plumbing system, bathymetry