Water filteration

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Across
  1. 2. the newest technology of water filtration
  2. 4. the first part that the water goes through
  3. 6. our name
  4. 7. the second part that the water goes through
Down
  1. 1. the last part that the water goes through
  2. 3. our topic
  3. 5. the place with the lowest amount of clean water