It has been my numerous observations that the jugs are NEVER cleaned properly. The jugs get a quick rinse in tepid water thats all. I know some who revere the old gal in MEM, sure she is nice, very quiet, been there a long time. But, I like to see her use soap and Hot water. Forget the outstations.
Additionally, I would never put ice from the cooler in a drink. Nor, use on board potable. The amount of coliform bactieria is unhealthy. This conclusion comes from Pax carriers, which are frequently audited. Cargo/crew food never is.
Please, dont quote Nietzsche in your reply.