Aerial view of the Iowa City Wastewater Treatment Plant
For sewer emergencies, call 319-356-5177
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The Wastewater Division maintains and operates an advanced treatment plant, at 4366 Napoleon Street SE, 17 lift stations and 300 miles of sanitary sewer piping throughout Iowa City. The Treatment Plant processed an average of 9.66 million gallons of wastewater per day in 2014.

Staff measures and reports daily on thirteen (13) different parameters to the Iowa Department of Natural Resources (IDNR) for both influent and effluent. Other major work elements include maintenance and operation of the treatment plant facility, lift stations and equipment; sewer main repairs and preventative maintenance, line cleaning and inspection and 24/7 response to emergency sewer calls. Staffing is seven days per week for operations staff. Administrative, plant and collections maintenance staff are on duty five days/week. 

The Waste Water Treatment Plant, located at 4366 Napoleon Street SE, was expanded in 2014 to accommodate biological removal of two key nutrients, total nitrogen and total phosphorus. The expansion enables the plant to comply with the State’s Nutrient Reduction Strategy and provides for future capacity for residential and industrial customers. The design treatment capacity of the facility is 24.2 million gallons per day, with a maximum daily capacity up to 43.3 mgd.