Which type of sample would NOT typically require a specific point of use?

General water samples typically do not require a specific point of use because they are meant to represent the overall quality of water from a broader source rather than from a specific location or point. These samples can be taken from various locations within a water distribution system, providing a comprehensive view of the water quality across the entire system. This allows operators to gain insights into trends and common issues affecting water quality without the need to focus on a particular point of use.

In contrast, lead samples, microbiological samples, and disinfection by-products samples are often taken from specific points of use. Lead samples, for instance, are typically collected from taps or fixtures to accurately assess the contamination levels at the point where consumers access the water. Microbiological samples focus on detecting microorganisms at certain critical points to ensure safety for human consumption. Similarly, samples for disinfection by-products need to be taken from points where water is distributed to assess compliance with safety regulations and ensure that the treatment processes are effective. Thus, their specific sampling points are crucial for accurately evaluating the presence of contaminants or assessing compliance with health standards.