I have been taking water and fuel on at Jost for years and can not fault them on quality. I took on both yesterday with only one problem. The attendant in an attempt to be helpful started to fuel me while I was doing the forward water tanks. Problem was he was in the aft water tank. Only got a splash before I stopped him. Real problem is that my wife just can't take a joke (besides me). Not sure how to clear the tank. Added some dish soap, drained and refilled the tank. Plan to continue doing this for a while. Does anyone out there have an idea how to solve my problem short of removing the tank and having it cleaned? Lesson is to pay attention when someone tries to be helpful. Regardless of the problem, the bottom line is that the captain is responsible.