I was going to say it’s because neither the AC nor the soda fountain have ever had their filters changed (which makes sense cause a dirty filter is going to allow for all sorts of nasty things to grow.
All I can say is when I was working in a restaurant in high school the owners were bribing the health inspector and Tennessee government sucks ass in general.
I worked there. The problem is that they do clean their nozzles and machines and tanks but what they don’t clean are the actual lines running the soda syrup from the storage tanks to the fountain. There’s just no viable way to do it.