What is typically the function of a sewage pump?

The function of a sewage pump is primarily to lift wastewater to a higher elevation. This is crucial in situations where gravity alone cannot effectively transport sewage or wastewater to the main sewage line or treatment facility. These pumps are designed to handle the denser and bulkier mixtures that come from toilets, sinks, and other wastewater sources, making them essential in residential and commercial plumbing systems where the installation of sewage lines must go uphill or over long distances.

In contrast, distributing clean water pertains to the role of systems such as booster pumps or water supply systems, not sewage pumps. Similarly, removing debris from sinks typically involves different plumbing fixtures or devices like strainers and waste disposals, which are not specific functions of a sewage pump. Lastly, mixing water with chemicals is more aligned with processes in water treatment facilities rather than the function of sewage systems. Thus, the primary role of lifting and moving wastewater effectively makes option C the correct answer.