I like any science that makes stuff out of toilet water. If they can make ice from toilet water, my iguana-monkeys can’t be that far out! (Yes, I RTFA, I just chose not to fully comprehend it for the purpose of amusement) 
Stupid Science: Make Ice From Fast Food Toilet Water – Consumerist
A New Tampa twelve-year old has found the toilet water in her local fast food joint to contain less bacteria than in the ice from the soda fountain.
(Thanks Mike)