Ugh.. gotten a little sick each time I've gone. This was the worst though. Missed a day of work and spent about 24 hours in bed with a fever... think/hope it's mostly passed now.
It's not just water and ice though. You need to be careful what you eat too. Anything that's washed directly with water is bad. This normally includes salad type vegetables like lettuce. Also need to be careful not to get water in your mouth while showering.. not something you usually think about.