Question

What are the impurities present in sewage

Answer 1

nitrates and phosphates are two impurities present in sewage

Answer 2

Impurities found in sewage water:

Organic impurities: Animal dung, human feaces (urea), oil

Inorganic impurities: Nitrates and phosphates

Hope above of my answer's will be helpful to you..........

If you are satisfied then please mark me as brainliest............