Which component is located where the service is attached to the main?

The corporation stop is a critical component located where the service line connects to the main water supply line. This fitting allows water to flow from the main line into the service line, which delivers water to individual properties. The corporation stop is essential for controlling the flow of water and providing a means to shut off water to a specific service line when maintenance or repairs are needed.

It is usually installed directly in the main line and is designed to open and close without disrupting the overall water supply. Understanding the function and placement of the corporation stop is vital for water operators, as it is a key point in managing the distribution of water and responding to service needs.

Other components like the water meter, service line, and main valve serve different functions and are located in areas that either measure water consumption, deliver water to properties, or control the entire system's flow, respectively. However, the corporation stop's unique role at the attachment point to the main differentiates it as the correct answer in this context.