How soon must a positive Total Coliform sample be resampled?

The requirement to resample a positive Total Coliform sample within 24 hours is critical for ensuring water safety and public health. The presence of Total Coliforms indicates potential contamination of the water supply, signaling that harmful pathogens could also be present. Therefore, taking action promptly is vital.

Resampling within a 24-hour period allows water treatment facilities to quickly determine whether the contamination is persistent or a result of a sampling error. This timeliness helps to guide immediate corrective actions, such as additional testing, monitoring, and possibly shutting down sources of contamination to safeguard public health.

Following the proper protocols ensures that any risks associated with contamination are addressed swiftly, minimizing health risks to consumers and maintaining the integrity of the water supply.