sound of water
Refers to any sound produced by water, such as dripping, splashing, or flowing.
I can hear the sound of water from afar.
静かな夜に、蛇口から落ちる水音だけが響いていた。
In the quiet night, only the sound of water dripping from the faucet echoed.
Compound of 水 (みず, water) and 音 (おと, sound).