In what context is the term sewage typically used?

The term sewage is specifically used to refer to waste materials that are generated from domestic activities, such as human waste, food scraps, and wastewater from sinks or showers. These materials are typically conveyed through a sewer system for treatment and disposal. This context underscores the biological and chemical nature of sewage, as it involves organic materials that often contain pathogens and contaminants that need to be managed properly for public health and environmental safety.

In contrast, other options do not align with the primary definition. For example, measuring liquid volume does not specifically pertain to sewage, nor does it encompass the distinctive characteristics of wastewater. Similarly, while there may be metrics associated with sewage in a technical sense, the term itself is not used as an industry standard metric. Lastly, while solid waste is a related concept, sewage specifically refers to liquid waste, making the classification of sewage as a type of solid waste removal inaccurate.