Our GMPs state "Only water (no additives) is allowed in production areas." If the thing infuses anything it's not only water so we wouldn't allow it. I think anything infused into water would (or at least could) also be considered a food product and therefor also banned from production areas.
Actual ingredients: NATURAL FLAVORS, CITRIC ACID, LACTIC ACID, SUCRALOSE, POTASSIUM BICARBONATE, PHOSPHORIC ACID, NIACINAMIDE, SODIUM BENZOATE (TO PRESERVE FRESHNESS), POTASSIUM SORBATE (TO PRESERVE FRESHNESS), CALCIUM PANTOTHENATE, PYRIDOXINE HYDROCHLORIDE, CYANOCOBALAMIN (VITAMIN B12)
I would tell employees sure! In the break area but not in production areas. In our facility the bottle wouldn't even be allowed. We require a solid, screw-on type lid. Theirs is two pieces and that type almost always leaks or starts to leak in a short time.
Just no.