A mixup by the University of Iowa caused raw sewage to be dumped into the Iowa River, the drinking water supply for the University and Iowa City. U-of-I spokesperson Ann Rhodes, says asanitary sewer line was mistakenly connected to the storm sewer drain –sending raw sewage directly into the Iowa River. The problem was discoveredlast Thursday.A handful of students were banned from their bathrooms yesterday.The students were told to use the residence hall’s public restrooms, andshower facilities reserved for university workers. The sewage dumpingdidn’t start ’til August 23rd, when students moved into the residence hall. Water samples have been taken for testing, but a state official says watertreatment plants likely removed any contaminants from the Iowa Riverdrinking water.