What would a negative coliform result suggest about the water?

A negative coliform result indicates that coliform bacteria, which are commonly found in the environment and feces, are not present in the water sample. This is significant because coliform bacteria serve as indicators of potential contamination by harmful pathogens. The absence of coliform suggests that the water is likely free from these contaminants, which supports the conclusion that it is safe for drinking.

While it is important to recognize that a negative result does not guarantee the absence of all possible contaminants or pathogens, it generally indicates a low risk regarding fecal contamination. Therefore, a negative coliform test is a strong indicator of water quality and safety for consumption.