What components make up a typical collection system?

The correct answer highlights the key components that are essential to a typical wastewater collection system. In this context, manholes, pipes, pumps, and force mains represent integral elements that work together to transport sewage from residences and businesses to treatment facilities.

Manholes serve as access points for maintenance and inspection of the system, allowing technicians to manage blockages or other issues within the pipeline. Pipes are the primary channels through which wastewater flows, and they must be designed to accommodate varying flow rates and pressure.

Pumps are crucial in scenarios where gravity alone cannot move wastewater through the system, especially in low-lying areas or when the wastewater needs to be lifted to a higher elevation. Force mains are pressurized pipes that transport wastewater from pumping stations to treatment plants, ensuring that flows remain consistent and effective.

The other options present components that are either associated with treatment processes (like treatment plants and filters) or pertain to different types of systems (septic systems), which do not typically apply to municipal wastewater collection systems. Therefore, the selection of manholes, pipes, pumps, and force mains accurately reflects the fundamental infrastructure elements required to facilitate effective wastewater collection and conveyance.