What is a likely effect of fecal contamination in drinking water?

Fecal contamination in drinking water is a significant public health concern, primarily due to the introduction of harmful bacteria and pathogens. When fecal matter enters a water supply, it often carries disease-causing microorganisms such as E. coli, Salmonella, and various viruses. The presence of these harmful bacteria can lead to serious gastrointestinal illnesses and potentially other health complications for individuals consuming the contaminated water. Regulatory bodies monitor for such contaminants to ensure water safety and protect public health.

In contrast, fecal contamination doesn't influence factors like water temperature, dissolved oxygen levels, or improve taste and odor, as these elements are not directly related to the microbiological safety or health risks associated with drinking water. This highlights the critical importance of maintaining high standards of water quality to safeguard against the negative impacts of contamination.