Which of the following hazards is evaluated by screening for Clostridium perfringes in water testing?

Clostridium perfringens is a type of bacteria that is commonly found in the intestines of humans and animals. Its presence in water can indicate bacterial pollution, as it is often used as an indicator organism to assess fecal contamination. When testing water, the detection of Clostridium perfringens suggests that the water may be contaminated with pathogens from fecal matter, which may pose significant health risks to humans if ingested.

This bacterium is particularly resistant to environmental stresses and can survive in water systems longer than other types of fecal indicator bacteria. Therefore, screening for Clostridium perfringens is a critical aspect of water quality assessments, specifically aimed at understanding the bacterial pollution levels in a body of water. This screening helps ensure that the water is safe for consumption and recreational use, thereby protecting public health.