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Which sewer carries both sewage and storm water?

(a) Outfall sewer

(b) Separate sewer

(c) Main sewer

(d) Combined sewer

I had been asked this question during an online interview.

The above asked question is from Types of Sewers topic in portion Construction of Sewers, Sewer Appurtenances and Sewage Pumping of Environmental Engineering

1 Answer

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Best answer
Correct answer is (d) Combined sewer

The explanation: Combined sewer carries both the sewage and the rain water from the roofs of the house and from the street.

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