raw water

Noun

uncountable

Water that has not been filtered or processed in any way.

Japanese Meaning

ろ過や処理が行われていない水、つまりそのままの生水

The hikers collected raw water from the mountain stream and boiled it before drinking.

ハイカーたちは山の小川から未処理の水を採取し、飲む前に沸騰させた。

Sense（1）

Water that has not been filtered or processed in any way.