Potable

прилагательное [литературно-книжное] годный для питья; питьевой Например: potable water — питьевая вода Синоним(ы): drinkable

Большой англо-русский словарь

Potable

I. adjective Etymology: Middle English, from Late Latin potabilis, from Latin potare to drink; akin to Latin bibere to drink, Greek pinein suitable for drinking • potability nounpotableness noun II. noun a liquid that is suitable for drinking; especially an alcoholic beverage

Merriam-Webster's Collegiate Dictionary