What is the primary purpose of a separate sewer system?

The primary purpose of a separate sewer system is to carry storm water separate from wastewater. This separation serves several important functions in urban design and environmental protection. By designating distinct systems for handling storm water and wastewater, municipalities can more effectively manage the flow of each.

Keeping storm water separate helps prevent overloading the wastewater treatment facilities during heavy rainfall, which can lead to untreated sewage being released into waterways, a significant concern from both a public health and environmental standpoint. It also helps in the management of storm water runoff, which can improve water quality by reducing the contamination that may come from urban surfaces.

In summary, a separate sewer system is crucial for effective storm water management, protecting water quality, and ensuring the capacity of wastewater treatment facilities to operate efficiently without undue stress.