Here is a crossword puzzle: Good luck!
![](https://static.insightsonindia.in/ncertusercontent/solutions/?domain=gF&l=PROJ8253/1506340496444243.jpg)
Across
3. Liquid waste products
4. Solid waste extracted in sewage treatment
6. A word related to hygiene
8. Waste matter discharged from human body
Down
1. Used water
2. A pipe carrying sewage
5. Micro-organisms which causes cholera
7. A chemical to disinfect water