Water Tank

A place to gather water nearby. Beware, the city consumes a lot of water.
Overview
The Water Tank is a building used to collect water within its working range, which is 19 tiles by default. It does not need to be placed next to a water source, so it can also be used in the middle of a settlement to clean up scattered water and gather it into one place.
In practice, it is usually placed on the surface beside a pool that collects rainwater, where it can run continuously. It can also make use of water discharged by 
- It gathers water from anywhere within its range, not just adjacent tiles.
- It is useful for centralized water cleanup in built-up areas.
- Surface rainwater collection is a common and reliable setup for keeping it supplied.
Official description
A place to gather water nearby. Beware, the city consumes a lot of water.