Which device connects the main service line to the city main?

The device that connects the main service line to the city main is referred to as a corporation stop. This type of valve is specifically designed to serve as the connection point between the municipal water supply and the service lines that distribute water to homes and businesses. Corporation stops are typically located underground and are used to control the flow of water from the city main into the service line.

When maintenance or repairs are needed, the corporation stop allows operators to shut off the water supply without affecting the entire city main. This is crucial for system management and service continuity.

The other options, while related to water supply systems, serve different purposes. For instance, a curbstop, which is sometimes conflated with corporation stop, is mainly used in service connections on the customer’s side and allows for control of water flow to individual properties. The meter, on the other hand, measures the amount of water consumed but does not serve as a connection point itself. Understanding these distinctions helps in comprehending the specific functions of various water distribution components in municipal systems.