If an operation has five packing lines each with a final rinse and only one well sourcing them all, will they still autofail if they only test four of the final rinse lines?
Yes. All five lines must show potability. If the fifth line is not tested the operation will have no idea if that water is potable. The scoring is based on ALL water uses being successfully tested. The operation didn’t test one of them and that fifth line is used to determine the score – it is an AUTOFAIL.