water

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Across
  1. 4. harmful tiny living organisms in water that cause disease
  2. 7. waterborne disease
  3. 10. insoluble impurity
  4. 11. formation of clouds
  5. 12. Process used to clean swimming pools
Down
  1. 1. soluble impurity
  2. 2. falling of rain or snow from the sky
  3. 3. easiest way to purify water
  4. 5. way of rainwater harvesting
  5. 6. Place where water is purified to make it drinkable
  6. 8. water changing to water vapour on heating
  7. 9. Solid form of water