CWEA Advanced Water Treatment Test 2026 – Dive In and Master the Waters!

The primary purpose of using a coagulant in water treatment is to promote the precipitation of contaminants. Coagulants work by neutralizing the charges on suspended particles, allowing them to clump together into larger aggregates, or flocs. This process makes it easier to remove these aggregates from the water during subsequent filtration or sedimentation steps. By enhancing the removal of turbidity and other pollutants, coagulants play a crucial role in producing clean and safe drinking water.

The other options focus on aspects that are not directly related to the coagulation process in water treatment. For instance, enhancing flavor and odor is not the main role of coagulants, as they primarily target physical contaminants rather than taste or smell. Additionally, stabilizing temperature variations does not relate to the coagulation process, and increasing dissolved oxygen levels is typically addressed through aeration rather than the use of coagulants. Thus, option B accurately reflects the function of coagulants in water treatment operations.