Question

Why we should not throw chemicals like paints and medicines down the drains?

Answer 1

Paints are often based on organic compounds, which can be harmful not only to humans and animals but also to microorganisms, which are used in sewage treatment.

Medicines, especially antibiotics are also toxic for most microorganisms and can lead to resistances of pathogenic bacteria if they are diluted.

Answer 2

Answer:

they may kill microbes that help purify water