What is the definition of a high hazard biological pollutant?

A high hazard biological pollutant is defined as agents that can cause disease. This definition encompasses various microorganisms, such as bacteria, viruses, and parasites, that pose significant health risks to humans and animals when they contaminate drinking water or the broader environment. The importance of identifying such pollutants stems from their potential to lead to serious health conditions, outbreaks, and even epidemics if appropriate measures are not taken to control or eliminate them. Understanding this classification is crucial for implementing effective water safety and public health protection strategies. In contrast, agents that are beneficial for health or are not harmful would not fall into the high hazard category, as they do not pose any risk of illness. Additionally, agents that decrease aesthetic quality focus more on visual or sensory attributes rather than health risks.