Question
Here is a crossword puzzle: Good luck!
Image
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-organism which causes cholera
$7.$ A chemical to disinfect water

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