Kansas health officials say there is no cause for alarm after three incidents in which millions of gallons of sewage spilled into the Kansas River at Topeka.
The latest incident was on Tuesday, when a sanitary sewer main leak caused 55,000 gallons of raw sewage to enter the river.
The Topeka Capital-Journal reports 3 million gallons of raw sewage spilled into the river in late April after a power failure at a pump station.
Earlier this month the city released partially treated sewage into the river, which it was allowed to do because of heavy rainfall.
The Kansas Department of Health and Environment said Thursday investigators tested bacterial levels after each incident and found them to be normal.