Chp 14 Waste water story

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Across
  1. 1. A word related to good hygiene
  2. 5. Waste matter discharged from human body
  3. 7. Liquid waste products
Down
  1. 2. A chemical to disinfect water
  2. 3. pipe carrying sewage
  3. 4. Used water
  4. 6. Microorganisms which causes cholera
  5. 7. Solid waste extracted in sewage treatment