water conservation crossword puzzle

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Across
  1. 6. water that falls from clouds onto Earth's surface
  2. 7. protecting resources from waste/loss
  3. 8. to decrease consumption and avoid waste
  4. 12. process of making seawater into clean water
  5. 13. using resources responsibly without running out
  6. 16. large natural stream of water flowing downhill across the land
  7. 17. liquid becoming gas below its boiling point
  8. 18. careless, unnecessary use of valuable items
  9. 19. household activity which uses highest volume water
  10. 20. long period with little to no rain
  11. 21. extreme low supply of something that makes it hard to find/get
Down
  1. 1. separation of pure water from impurities with boiling & condensation
  2. 2. very massive body of saltwater
  3. 3. valve or faucet that controls the flow of water from a pipe
  4. 4. lake used to store a large water supply for a community
  5. 5. releasing trash or harmful chemicals into the environment
  6. 9. recycled wastewater which can be reused
  7. 10. water with very little salt & few dissolved minerals
  8. 11. stewardship of resources to prevent waste/loss
  9. 14. gaseous state of dihydrogen monoxide (2 words)
  10. 15. overflow of water from a water body or heavy rain onto land