What does a turbidity value of "0 NTU" indicate?

A turbidity value of "0 NTU" indicates that the water is clear and free of suspended particles. NTU, or Nephelometric Turbidity Units, is a measurement used to quantify how clear or cloudy a liquid is, primarily due to the presence of suspended solids. A value of 0 NTU means there are no particles present that would scatter light, so the water is considered to be crystal clear. This is crucial for assessing water quality, especially in drinking water supplies, as higher turbidity levels can indicate contamination or the presence of potentially harmful substances. Maintaining low turbidity levels is essential for both aesthetic and health-related reasons in water management.