Which of the following is an indicator of the flocculation process in water treatment?

The clarity of water serves as an important indicator of the flocculation process in water treatment. Flocculation involves the aggregation of fine particles into larger clusters or flocs, which can then be removed from the water. During this process, the water transitions from being turbid or cloudy to clearer as the flocs form and settle. A clear water sample signifies that suspended solids are being effectively removed, indicating that the flocculation process is functioning as intended. Monitoring clarity is essential for operators, as it provides a visual assessment of the effectiveness of coagulation and flocculation steps within the water treatment process.

Temperature changes, pumping speed, and pH level may influence the efficiency of flocculation but do not directly reflect the outcome of the flocculation process like water clarity does.