This work aims the proposal of a Water Treatment Plant Quality Index (WTPQI), applied on the conventional plants, to compare the performance of plants by means a methodology beyond compliance of the drinking water guideline. The WTPQI methodology was based on the same utilized for the Water Quality Index. The WTPQI application on ten plants has validated it as a good tool for evaluation plants. A clear tendency of plants with good performance, in terms of turbidity effluent, keeping high WTPQI values was verified. This fact demonstrated the usefulness of the index as a tool able to help water supply systems management.
Quality index; water treatment plant evaluation; water treatment
