Question

Water containing harmful impurities is said to be polluted. Pollution occurs due to :

• A. Dumping of untreated sewage
• B. Factory wastes
• C. Both A and B
• D. Afforestation

Answer 1

The correct option is C Both A and B

Pollution of water is mainly caused due to the dumping of raw sewage released from homes, and the bacteria breeding from it. It is estimated that globally $80$ percent of wastewater is dumped back into the water supply without being treated. So, dumping of untreated sewage is a cause of water pollution.

Pollution of water is also caused due to factory wastes, as factories often dump dirty water, used chemicals and oils, sewage, and cafeteria waste directly into the ground or into a community water source, such as a river, lake, or stream. Waste dumped into the ground can seep through the soil and poison the groundwater that feeds other water sources, such as wells and ponds.

So, both options (A) and (B) are correct .

Therefore, the final answer is option (C).