Which bacteria is commonly associated with fecal contamination?

• A. Salmonella
• B. Listeria
• C. E. coli
• D. Campylobacter

Answer: (C)

E. coli, particularly the strain known as Escherichia coli O157:H7, is commonly associated with fecal contamination. This bacterium is a key indicator of fecal pollution in water and food. Its presence suggests that fecal matter from warm-blooded animals or humans has contaminated the environment, which can pose significant health risks.

In addition to being a marker for contamination, some strains of E. coli can lead to severe gastrointestinal illness, making it a critical focus for environmental health specialists monitoring food safety and water quality. This strain can often be traced back to undercooked beef, raw milk, and contaminated produce, highlighting the importance of proper food handling and sanitation practices to prevent outbreaks.