drinkable

Is the tap water in this city drinkable, or should we buy bottled water instead?

(Chinese) 这个城市的自来水可以直接饮用吗，还是我们应该买瓶装水？

After the flood, the government provided tablets to make the river water drinkable.

(Chinese) 洪水过后，政府提供了药片使河水变得可以饮用。