Question

The quality of water is deteriorating day by day justify the statement

Answer 1

The quality of water is deteriorating day by day , this implies:-
1. water is considered to be essential for survival. Nowdays the water is of poor quality due to which it has to go through several purifications to make it fit for consumption.
2. water contamination is mainly due to pollutions and excess disposal of garbage. 
3 This harms aquatic ecosystem as well as humans to a very large extent.

Answer 2

Water quality is deteriorating because of pesticides, toxic and hazardous wastes, litter and rubbish, decayed organic materials and chemicals.