Water is a natural resource in Survival 303.
Water is the most common and basic drink that fills thirst. It can be found in ponds, lakes, waterfalls, and wells.
Drinking water right out of a source only restores 5 thirst points and takes away one health point per portion. Drinking out of a bucket restores 10 thirst points per portion and no health loss. You must have a water source to survive because of the thirst bar being there and draining every few minutes. Ocean water is not drinkable.
Staying in ocean water for prolonged periods of time can harm you, unlike the paradise pond, which can be drunk, but the player cannot drown in it.
Strangely, the waterfall at rockma island cannot be drunk or collected in a bucket.