Water Treatment Operator-in-Training (OIT) 2025 – 400 Free Practice Questions to Pass the Exam

Chlorine serves as a powerful oxidizing agent in water treatment, particularly in breaking apart organic compounds. The oxidizing properties of chlorine allow it to react with a variety of substances in the water, including harmful organic materials, which can include pathogens and pollutants. This reaction helps to convert these organic compounds into less harmful substances, effectively improving water quality and enhancing the safety of drinking water.

By breaking apart these compounds, chlorine not only eliminates existing contaminants but also helps prevent the formation of potentially harmful byproducts that may arise from other processes. Consequently, the use of chlorine is critical in ensuring that water is treated effectively and is safe for human consumption. The other options, such as increasing temperature, enhancing mineral content, or decreasing pH levels, do not accurately describe the primary function of chlorine as an oxidizer in the context of water treatment.