Question

Which of the following describes combined sewer system?

• A. Combination of drinking water and waste water
• B. Combination of rain water and drinking water
• C. Combination of sewage water and rain water
• D. Combination of sewage water and waste water

Answer 1

The correct option is C

Combination of sewage water and rain water

Combined sewer systems are sewers that are designed to collect both land drainage (rainwater and snowmelt) and wastewater (sewage from homes and businesses) in the same pipe. Most of the time, combined sewer systems transport all of the land drainage and wastewater to a sewage treatment plant, where it is treated and then discharged to the river.