potable
adj.adj. safe to drink. You use this to describe water or liquid that is clean and does not make you sick.
adj. fit for or intended to be drunk; safe for human consumption. Often used in technical or formal contexts regarding water quality.
The local government provides potable water to every household.
After the heavy rain, the residents were warned not to drink the water until it was confirmed to be potable.
The expedition relied on melting snow to ensure a steady supply of potable water, as the river was contaminated by industrial runoff from the valley below.
The adjective is derived from Late Middle English potable (“drinkable, potable”), from Middle French, Old French potable (modern French potable (“drinkable, potable”)), and from its etymon Late Latin pōtābilis (“drinkable, potable”), from Latin pōtāre (“to drink”) + -bilis (suffix forming adjectives indicating a capacity or worth of being acted upon). Pōtāre is the present active infinitive of pōtō (“to drink”), from Proto-Italic pōtos, from Proto-Indo-European peh₃- (“to drink”). The English word is cognate with Catalan potable, Italian potabile, Spanish potable. The noun is derived from the adjective.