What do you mean by untreated sewage?

Asked by Topperlearning User | 29th Jul, 2016, 11:36: AM

Expert Answer:

Untreated sewage is waste products from factorries, industries and feces matter of human. This waste is highly dangerous as it contains bacteria, virus, toxic substances etc.

Answered by  | 29th Jul, 2016, 01:36: PM