Water (Fallout Shelter)

Water is a resource in Fallout Shelter.

Overview
Water is the source of life - and in Fallout Shelter, that's not an exaggeration. A stable supply of water, like food, ensures that your dwellers are happy and enjoy a full health bar. Without water, they're angry and more importantly, become irradiated. This reduces their maximum health, down to 50% of their basic hit points. Worse yet, it persists and has to be removed with RadAway or (slowly) disappear over time.

Water is a secondary priority. Power comes first.

Producing water
There are three basic sources of water:
 * Water treatment rooms, available from the start.
 * Water purification rooms, which provide lots of water in the late game.
 * Nuka-Cola bottlers, which provide lots of food and water in the late game.