Reply To: Dunkin Donuts Muffins Home › Forums › Decaffeinated Coffee › Dunkin Donuts Muffins › Reply To: Dunkin Donuts Muffins September 6, 2019 9:32 am at 9:32 am #1784436 MilhouseParticipant Joseph, the OU, which is the major hechsher in the USA, does not require NYC water to be filtered.
