Safe and suitable to drink; palatable and not harmful if consumed.
From 'drink' (Old English 'drincan') plus '-able' suffix (from Latin 'habilis'). Became a common term in food safety and water quality discussions, especially in the 20th century.
Access to drinkable water is one of the biggest global health challenges—over 2 billion people lack safe drinkable water, which is why desalination technology and water purification are among the most important engineering challenges of our time.
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