Texas Commission on Environmental Quality (TCEQ). Class C Water License Exam

Where should a corporation stop be installed?

1. At the service entrance

2. On the main line and service line attached

3. At the water treatment plant

4. At the water meter

The correct answer is: On the main line and service line attached

A corporation stop should be installed on the main line and the service line attached. This is the correct placement because the corporation stop serves as the control valve that connects the water supply from the main line to the individual service lines of the premises being served. It allows for the shut-off of water supply to a specific service without affecting the entire system, enabling maintenance and repair work to be conducted safely and efficiently. The service entrance is not the ideal location for the corporation stop, as it typically refers to the point of entry for water into the building or facility rather than the connection point for controlling access from the main supply. Installing it at the water treatment plant is impractical because the treatment plant usually serves a broader area and does not directly connect to individual services. A water meter is designed to measure the volume of water flowing into a property and is not designed to control the flow, which is the primary function of a corporation stop. Thus, the installation of the corporation stop on the main line and service line is essential for effective water management and maintenance.