WATER PUZZLE

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Across
  1. 3. To settle down suspended impurities(Loading)
  2. 5. Pursian wheels
  3. 8. To collect rainwater
  4. 9. Step-well
  5. 10. To kill bacteria
Down
  1. 1. Human-made channels to irrigate the land
  2. 2. Free water stands
  3. 4. Main source of water on crops
  4. 6. A wheel with a grooved outer rim
  5. 7. The purest form of water