Final answer:
The turbidity of a continuously monitored water sample shall not exceed 0.3 NTU to adhere to environmental standards that stipulate the 99th percentile of 1-hour daily maximum concentrations, averaged over 3 years, should not be exceeded more than once per year.
Step-by-step explanation:
If you are continuously monitoring turbidity in a water sample, based on environmental guidelines and standards which stipulate that the 99th percentile of 1-hour daily maximum concentrations, averaged over 3 years, should not be exceeded more than once per year, the turbidity shall not exceed 0.3 NTU (Nephelometric Turbidity Units). It's important to measure this because high levels of turbidity can be an indicator of the presence of microorganisms, chemicals, or other pollutants that may pose a health risk.
Measuring turbidity is essential for maintaining water quality, and exceeding the recommended limit could lead to non-compliance with health regulations. Regulations like these are designed to ensure that water remains safe and clean for consumption and usage.
Measuring turbidity is important because it provides a fast method to estimate cell density in solutions like bacterial cultures. Without effective measurement, you won't be able to determine the baseline clarity of the sample in order to detect changes caused by bacterial growth.