ECOLOGY
ENVIRONMENTAL ISSUES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
India
|
|
|
Japan
|
|
|
North Korea
|
|
|
China
|
Detailed explanation-1: -The largest source of water pollution in India is untreated sewage. Other sources of pollution include agricultural runoff and unregulated small-scale industry. Most rivers, lakes and surface water in India are polluted due to industries, untreated sewage and solid wastes.
Detailed explanation-2: -All 44 rivers in Kerala are highly polluted due to inflow of untreated domestic, industrial wastes and agriculture runoff. Most of the industries are near the thickly populated riversides, often near cities and towns. There is no efficient water treatment system in industries and city municipalities.
Detailed explanation-3: -Seventy per cent of the sewage that India generates is not treated. More than 4, 000 septic trucks full of sludge are disposed of in the Ganges, its longest river, and its tributaries every day. Each truck would contain, on average, 5, 000 litres of human waste.
Detailed explanation-4: -Municipal sewage is considered to be the main pollutant of water. Most of the sewage receives no treatment before discharge in all the cities of Odisha State.