Cabin Fever (2003)
Plot: 5 friends are all set for their vacation to a small cabin in the woods for a week to celebrate the end of their year at college. A mysterious stranger, suffering from some unknown disease, shows up and they quickly drive him off. Unknown to them, he stumbles down to the reservoir, and dies…effectively poisoning their water supply. Now, every drink of water they take could be their last…and they don’t even know it.
