The Elements of Davis
FIRE
WATER
EARTH
AIR

At room temperature, water is a clear, colorless, odorless, tasteless liquid. In agricultural areas, farmers use it to irrigate their fields. Some of us just drink it. Classical chemists believed it to be one of the four (or five) elements, while modern ones regard it as a compound of hydrogen and oxygen.

You probably already knew that. More relevant information may be found at:

Agricultural Uses

Drinking water

Lakes, Rivers, Ponds and Streams

Management

Storage

Rights & Politics