Contamination of rivers like Ganga leads to:
Impure water
Death of aquatic life
Acidic soil
Diseases
The contamination of Ganga has adverse effects on livelihood because:
1) It is the biggest source of drinking water in India and contamination makes it unfit for this purpose.
2) Large number of aquatic life is dying due to contamination.
3) Using this water for irrigation makes the soil acidic and thus affecting agriculture.
4) The impurity in water leads to production of harmful microbes which can cause various diseases.