What is turbidity measured in?

Turbidity is primarily measured in Nephelometric Turbidity Units (NTU). This unit reflects the degree to which water loses its transparency due to the presence of suspended particulates, which can include sediments, algae, and organic matter. NTU is derived from the use of a nephelometer, an instrument that measures the light scattered by particles in the water sample at a specific angle.

Using NTU as a measurement allows for an accurate assessment of water clarity, which is crucial for maintaining water quality, especially in drinking water treatment and environmental monitoring. The relevance of NTU is underscored by its widespread acceptance as an industry standard for reporting turbidity levels, aiding water treatment professionals in making informed decisions regarding treatment processes and compliance with regulations.