Water that is ____ to drink is called potable. It is not pure water as it contains dissolved substances. In the UK most water is fresh water (____) that collects in the ground into rocks which are called ____ lakes, reservoirs and ____, has then passed through filters and then sterilised. Sterilising agents include ____ Ozone or Ultraviolet light. If fresh water is not available like crypus then desalination of salty water or sea water is needed. It can be done by ____ or using membranes that reverse ____. You need ____ resources to run these processes.

Leaderboard

Visual style

Options

Switch template

Continue editing: ?