A boil order remains in effect for Ottumwa’s south side after a water main break Saturday (7/31). Ottumwa Water Works tells the No Coast Network that around 7:20 Saturday night, a large transmission main broke on Church Street. That caused a large area of Ottumwa south of the Des Moines River to experience very low water pressure. When water pressure is low, unhealthy bacteria can get into the drinking water. It’s recommended that you boil water for one minute, let it cool and then use it for drinking, food preparation or brushing your teeth. The boil order is expected to last through at least Tuesday (8/3).