Water Treatment Operator-in-Training (OIT) Practice Test

What is the name of the valve which connects the customer's service line to the municipal water line?

1. bypass valve

2. control flume

3. curb stop

4. check valve

The correct answer is: curb stop

The valve that connects the customer's service line to the municipal water line is known as a curb stop. This valve is strategically placed usually near the property line, allowing the municipal water authority to control the flow of water into a customer's service line. It plays an important role in isolating the water supply for maintenance or repairs without needing to shut off the water supply to the entire street or area. Additionally, the curb stop can be used to disconnect service in case of non-payment or other issues, providing a means for the municipality to manage their resources effectively. The other types of valves mentioned serve different purposes. A bypass valve is used in systems where a secondary route is required for water to flow, typically during maintenance. A control flume is more associated with measuring and managing water flow in open channels rather than being a direct connection between service lines. Lastly, a check valve prevents backflow in a pipeline, allowing fluid to flow in one direction and protecting systems from contamination. Thus, the curb stop is specifically designed for connecting customer service lines to municipal water systems.