2-year-old's science project showed that Fast food ice was dirtier than toilet water

A 12-year-old Jasmine Roberts found tested the water from the ice machines at 5 fast food restaurants in South Florida and compared them to the water in the toilets in those same restaurants. 70% of the time, the ice water was dirtier than the toilet water. Some of the ice water even tested positive for E. coli bacteria.

How is that possible? Toilet water comes from sanitized city water. The ice, on the other hand, might come from ice machines that haven't been cleaned in a long time, and the employees at the restaurants might be scooping the ice with unwashed hands.
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