What is the primary role of the lead pump in a wet well scenario?

The primary role of the lead pump in a wet well is to manage the water level. This pump is essential for ensuring that water is removed efficiently from the wet well, helping to maintain an optimal level of liquid. By doing this, the lead pump prevents overflow and protects the system from damage, while also facilitating the proper operation of the overall wastewater collection system.

The lead pump works by responding to the water level within the wet well; it activates when the water level rises above a predetermined threshold and continues to operate until the level falls to a safe point. This automatic adjustment is crucial for the smooth operation of wastewater management, as it ensures that the system can handle variations in inflow and outflow. In contrast, while the other choices may play roles in a wastewater collection system—such as emergency backup for reliability, monitoring pressure to ensure efficient operation, or controlling the electrical system to maintain functionality—they do not specifically define the primary function of the lead pump regarding water level management in a wet well scenario.