Question

industrial units generally releases wastes and effluent.when does these wastes become a cause of water pollution?is this the only cause of water pollution?if not what other sources may lead to water pollution

Answer 1

industrial unit generally releases waste to the nearby located river this is not only the one cause of water pollution water can be polluted by the grains of the city which goes and meet at the river and throwing of wastes in the river

Answer 2

No not only industrial effluents are the causes of water pollution. The other causes of water pollution are:::
1.The sewages from the homes
2.The waste water directly let off to water sources.
3.The waste material directly dumped into water.