What is the recommended turbidity level of settled water before it is applied to the filters?

The recommended turbidity level of settled water before it is applied to the filters is crucial for ensuring efficient filtration and maintaining water quality. A turbidity level of 1-2 NTU (Nephelometric Turbidity Units) is optimal because it indicates that the water has been adequately treated, allowing for effective removal of particulate matter during the filtration process.

At this low level of turbidity, the water is more likely to pass through filters without clogging or overwhelming them, which can happen if the turbidity is too high. Additionally, maintaining a turbidity of 1-2 NTU helps ensure that the filtration system can operate efficiently, ultimately contributing to the overall treatment process and the safety of the drinking water supplied to the community. Higher turbidity levels can lead to increased operational challenges and may also affect the effectiveness of disinfection processes thereafter.