In the situation described in the preceding questions, how many BACT compliance samples must be collected by the Anywhere water system in June?

• A. 5
• B. 2
• C. 3
• D. 4

Answer: (A)

BACT compliance sampling is about following a monthly sampling plan that ensures the distribution system is checked for bacteriological safety. The plan specifies how many samples must be collected in a given month to get a representative picture of the water quality and to have enough data for any necessary repeat tests if something looks off.

In June, the Anywhere water system’s plan requires five samples. This setup provides the needed coverage across the system and includes enough data to confirm compliance for the month. If fewer samples were taken, the system wouldn’t meet the plan’s minimum and could be out of compliance. Taking more samples than planned isn’t required unless the plan or a specific situation calls for it. So five is the number that aligns with the approved schedule for June.