Which of the following is/are useful ways of utilizing waste water?

Certain pollutants in sewage water can become fertilizer for various crops.

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Waste water can be used for recharging the ground water.

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Waste water can be used for irrigation.

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All of the above.

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Solution

The correct option is D All of the above.
Waste water can be used for multiple purposes as mentioned below-
(a) For recharging the groundwater.
(b) It can be used for irrigation.
(c) Treated municipal water can be used for washing cars and watering the gardens.
(c) Certain pollutants in sewage water can be used as fertilizers for various crops.
Therefore, the correct answer is option D.

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