(Horicon) The City of Horicon Water Utility has issued a boil water notice for residents. Utility Director Dave Magnussen (MAG-nuss-in) says samples taken on August 24 and 26 indicate the presence of bacteria in the water system. Magnussen says the samples have NOT tested positive for Fecal Coliform (fee-kull coal-uh-form) but an “indicator organism” has been found. Water can still be used for cleaning and bathing but should be boiled for three minutes if it will be used for drinking and cooking. Magnussen says the utility is taking action to eliminate the problems by raising disinfection levels and flushing the entire water system. The boil water order will be in effect until at least tomorrow (Wednesday).