What is the first step taken if chlorine breakthrough occurs post GAC (Carbon) Filter #1?

When chlorine breakthrough occurs after a GAC (Granular Activated Carbon) filter, the first necessary action is to place all machines in bypass. This step is crucial because the presence of chlorine in treated water can indicate that the GAC filter is no longer effectively removing chlorine from the water.

By bypassing the machines, the facility ensures that chlorine does not enter the water treatment system further downstream, which could compromise the quality of water produced and potentially endanger patient safety. Placing the machines in bypass allows for immediate mitigation of the problem while steps are taken to assess and resolve the issue with the GAC filter.

Testing the treated water or notifying others, while important actions, would follow the bypass step. Stopping all treatments might not be necessary or practical, especially if bypassing the machines is sufficient to manage the situation. Therefore, placing all machines in bypass is the appropriate first response to manage chlorine breakthrough effectively.