We have a separate building for food grade production, which is a bit away from the building with the lunch room. We have a little shed outside the production building that has a water cooler in it.
This production building is not climate controlled, and it gets extremely hot in there in the summer. Workers are allowed and encouraged to drink water or other clear beverage in that shed area every 15 minutes during the extremely hot times of the summer. They do not have to take a break, this is part of their working time.
But they are not allowed to eat at the shed area, nor can they take the drinks into the production area. Both AIB and the state health department inspect us, and they agree with this set up. So putting water fountains/coolers in the hall or other non/production area adjacent to your production floor and allowing workers to use that for water for hydration should be fine.
I used to work in a laboratory. We handled radioactivity and some hazardous chemicals. We could not eat or drink in the lab. My office was within the lab. Guess what, I could not have a cup of tea in my office. Or a bottle of water. But there was a VERY good reason for infringing on my liberties and micromanaging my liquid input. If I wanted a drink, I left the area to get it.
BTW, it was also self imposed, since I was the safety officer and the radiation safety officer there.
Sometimes, people have to change what they are used to doing when they accept a job making food or food packaging for the common good. Like IRI said, as long as the reason for the rule is explained, it's a lot easier.
Martha
"...everything can be taken from a man but one thing: the last of the human freedoms--to choose one's attitude in any given set of circumstances, to choose one's own way." Viktor E. Frankl
"Life's like a movie, write your own ending." The Muppets