Potable water

12345678910
Across
  1. 1. the boiling point of water (in degrees Celsius)
  2. 4. the term for bacteria and viruses
  3. 5. the 1st stage of making ground water potable
  4. 7. the term for water with low levels of salts and microbes
  5. 8. the light that can be used to sterilise water
  6. 9. chemical added to water to kill bacteria
  7. 10. water that contains only water molecules
Down
  1. 2. process of making potable water from sea water
  2. 3. state change from liquid to gas
  3. 6. state change from gas to liquid