漏水

1. Origins, structure, and basic meaning

• Structure: 漏水 (ろうすい) is a compound noun for unintended water leakage from plumbing or a building.
• Basic usage: 天井からの漏水で床がぬれる makes water from the ceiling the cause of a wet floor, while 漏水箇所を調べる identifies the leak location sought by opening a wall.

2. Common pitfalls and similar expressions

• Leakage event and source location
  • 漏水で refers to the leakage event, whereas 漏水箇所 refers to its source location. The wet floor is not necessarily where the leak originated.