noun
water supply; water service; tap water
Refers to the public water supply system, the service itself, or the water that comes out of the tap.
今月の水道代が高かった。
The water bill was high this month.
この地域の水道は整
The water supply in this area is well maintained.
水道の水はそのまま飲めますか？
Can I drink the tap water as it is?
noun
Used in geographical names for narrow waterways or straits, such as 関門水道 (Kanmon Strait).
関門水道は本州と九州の間にある。
The Kanmon Strait lies between Honshu and Kyushu.
noun
water course; waterway
A general term for a waterway or artificial channel; less common than sense 1 in everyday speech.
この水路は農業用水道として使われている。
This channel is used as an agricultural waterway.