Dubuque city officials say a plugged sanitary sewer pipe has caused untreated wastewater to flow down a street and into a storm sewer intake.
The City of Dubuque Public Works Department says it received a report about the incident in the 500 block of Samuel Street Saturday morning. Crews were able to remove the blockage a short time later.
Officials are inspecting the line to try to identify the cause of the blockage. The Iowa Department of Natural Resources is warning people to keep children and pets away from the area for 48 hours.