Indiana Water Operator Certification Practice Exam 2026 - Free Water Operator Practice Questions and Study Guide

A vacuum regulator plays a crucial role in the safe handling and delivery of chlorine gas used in water treatment processes. Its primary purpose is to ensure that if there is a leak or a drop in pressure within the system, the regulator will activate to stop the flow of chlorine gas. This safety feature is essential because uncontrolled releases of chlorine can pose serious health risks to both personnel and the surrounding community.

By monitoring the system’s pressure, the vacuum regulator maintains a safe operating environment, preventing excessive amounts of chlorine from being introduced into the system during a malfunction. This enhances the overall safety protocols in water treatment facilities, protecting both human health and the environment.

The other choices, while related to the handling of chlorine gas, do not accurately describe the primary function of a vacuum regulator. Increasing flow, regulating temperature, or measuring chlorine levels are not within the scope of tasks that a vacuum regulator is designed to perform.