Question

The lake receives more water from sewage than natural water flow information

Answer 1

Increasing population is one main reason for pollution. Rivers and streams drain pollutants from the landscape where they concentrate in lakes and other water bodies. Industries and sewage add to contaminating lakes. Many Cloth factories dispose dye chemical into lakes without treating them.  Aquatic species such as fish exposed to contaminants as some pollutants don't readily dissolve in water and are ate by organisms causing death.