Handwashing fixtures require potable water and Do Not Drink labeling
“The fresh water tank on the service vehicle must be filled with potable water only. All fresh water tanks on the service vehicles and affixed to hand wash fixtures must be labeled with the international symbol for Do Not Drink. Each hand washing fixture must be sufficiently supplied with soap and paper towels adequate for the duration between servicing.”
511-3-6-.03(10)
Why it matters: Soap and towels must last the whole interval between services — a station stocked for a day but serviced weekly is out of compliance by midweek.

