Household plumbing consists of the machine of pipes, furniture

https://canvas.parra.catholic.edu.au/eportfolios/1206/home/when-to-repair-vs-replace-plumbing-fixtures

Household plumbing entails the machine of pipes, furnishings, and fittings installed for water distribution and waste removal in residential constructions. Proper protection guarantees powerfuble operation and prevents costly maintenance.