In a sewer system, what does 'SSO' stand for?

The term 'SSO' in the context of a sewer system stands for "Sewage System Overflow." This refers to the discharge of untreated or partially treated sewage from a wastewater system, which can occur due to various reasons such as heavy rainfall, system blockages, or equipment failures. SSOs are critical issues because they can have significant environmental impacts, degrade water quality, and pose public health risks. Understanding SSOs is essential for developing effective maintenance and response strategies within collection systems.

The other options do not accurately reflect this critical concept associated with sewer management. For instance, "Sewage Service Obligation" does not capture the overflow aspect, while "Sewage Spill Over" and "Sewage Safety Operation" do not correspond to commonly recognized terminology in wastewater management. Therefore, recognizing SSOs as Sewage System Overflows is crucial for addressing and mitigating the risks they pose to public health and the environment.