Important Questions on Wastewater Management
Why it is necessary to treat sewage before disposing of it in a water body? 
Name the four diseases that can be caused by an improper drainage system. Why is cholera outbreak common after flood? In a city, there are separate pipes for disposing of sewage water and storm water. Why is this necessary? What processes does sewage treatment involve? How can contamination of drinking water occur from sewage even in a cover drainage? List the ways in which wastewater present in sewage is generated and the kind of contaminants present in each. What problem arises due to improper drainage? 
