You know the brain-eating amoeba right, people are afraid that water contaminated will kill them if they drink it or get it into any of their face orifices. In reality, the only way for a brain-eating amoeba to kill you is if you snort the water like it's coke and you must get it in really good in there. In fact, death by brain-eating amoeba are rather rare and there are plenty of lakes that people swim in that contain the amoeba.