Students in Yale have gotten another day off from school after the city said traces of E. coli were discovered in the city's water system.
Yale Schools officials say classes have been canceled since Monday.
The Payne County community says a sample of the water from the sewer plant tested positive for the bacteria on Friday.
The city is advising residents and businesses to boil water before using it until further notice.
4/15/2014 Related Story: Yale Schools Closed As City Awaits Water Sample Tests