depending on the amount of water in the fuel and the amount you drove could delay the water from migrating to the water seperator. Once it started then the conditions are right for even more to make its way there. You will have to drain the tank and seperate the fuel from the water. It's going to be a real pain to deal with. The lines will have some water in them and you will just have to keep purging it out with good fuel.
As far as who to tell about the problem. "Good Luck." I had this happen to a gas engine and all I got was the run-around. No luck at all from any state agency.
you probably have not hurt anything but I can't be sure. I would let the place you got fuel know about this. try to get them to be responsable for your expenses and inconvenience.
Jim