freshwater

US /ˈfreʃˌwɑː.t̬ɚ/

UK /ˈfreʃˌwɑː.t̬ɚ/

of or relating to water that is not salty, in particular that found in rivers, lakes, and ponds

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Many species of fish live in freshwater habitats.

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The lake is a source of clean freshwater for the town.