What is an essential function of storm pumps in manhole drainage?

Storm pumps play a crucial role in managing water levels, particularly during heavy rainfall or storm events. Their primary function is to remove collected rainwater from manholes, preventing flooding and ensuring proper drainage. By effectively pumping out excess water, these systems help maintain the integrity of the underground infrastructure and reduce the risk of water damage to utilities and surrounding areas.

While enhancing water pressure, transferring water to treatment plants, and cooling underground systems may be functions relevant to other types of pumps or water management systems, they do not specifically address the core purpose of storm pumps in relation to manholes. Storm pumps are fundamentally designed to eliminate accumulated rainwater, making option C the most accurate representation of their essential function.