noun, takes genitive case の

  1. fresh water (i.e. not salt water).

Variations

Pronunciation Kanji Kana Is Common
淡水 たんすい

Contained Kanji Breakdown

thin, faint, pale
あわ.い タン (7th, N1)
water, water radical (no. 85)
さんずい
inflammation, flame, blaze
ほのお エン ぬく (8th, N1)
fire
ひ カ ほ- (1st, N5)
to divide
person
ひと ニン ジン (1st, N5)
water
みず スイ み (1st, N5)