What is a significant health risk associated with E. coli and Fecal Coliform?

The significant health risk associated with E. coli and Fecal Coliform is primarily gastrointestinal illnesses. These bacteria are indicators of fecal contamination in water and can lead to serious health issues when ingested. E. coli, in particular, is known for causing outbreaks linked to contaminated food and water, often resulting in symptoms such as diarrhea, abdominal cramps, nausea, and vomiting.

The presence of Fecal Coliform in drinking water supplies typically suggests that there may be a pathway for pathogens associated with intestinal life to enter the water supply, raising alarms about the potential for outbreaks of gastrointestinal diseases. Maintaining water quality to prevent such contamination is crucial for public health.

The other options, while they represent health issues, are not directly linked to the presence of E. coli or Fecal Coliform bacteria. For instance, increased water temperature can influence aquatic ecosystems but does not indicate a direct health risk related to these pathogens. Respiratory infections and cardiovascular diseases stem from different sources and are not associated with fecal contamination or the specific effects of E. coli. Understanding the risk factors of waterborne diseases is vital for effective water treatment and public health safety.