Multiple choice

The presence of high coliform counts in water indicates _________.

  1. contamination by human wastes

  2. phosphorus contamination

  3. decreased biological oxygen demand

  4. hydrocarbon contamination

  5. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total coliforms are a group of bacteria commonly found in the environment, for example in soil or vegetation as well as the intestines of mammals, including humans. Total coliform bacteria are not likely to cause illness, but their presence indicates that your water supply may be vulnerable to contamination by more harmful microorganisms present through animal or human waste.

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