A positive fecal coliform test must be reported to the primary agency within how many hours?

A positive fecal coliform test must be reported to the primary agency within 24 hours in order to ensure a swift response to potential public health risks. Fecal coliform bacteria indicate the presence of fecal contamination in water, which can lead to serious health issues if consumed. Rapid reporting allows the primary agency to take necessary actions, such as issuing boil water advisories, conducting further testing, and addressing any contamination sources. This time frame is important for protecting public health and ensuring quick interventions to prevent waterborne illnesses.

The other options represent longer reporting times that do not align with the urgent nature of handling fecal contamination findings, which require immediate attention to safeguard community health.