Some cities in the world are in dry, desert areas where water is scarce. In all cities, water must be purified and distributed to homes and buildings. In a current issue of The Denver Post , look for articles about how cities and towns in your area deal with the challenge of water. Or, look for any evidence of public water use. Parks and recreational facilities, for example, have lawns that require water and maintenance.
Public utilities require water for generating electricity.
And many different industries require water for manufacturing or processing. The Denver Post Corp.