The City's wastewater operations are quite large for a community of 3,700. The presence of West Liberty Foods along with the rest of the city created a need for a Grade IV wastewater plant. The plant has a design capacity of 2.21 million gallons per day, with average daily flows in excess of 1.4 million.
Using the activated sludge process, the plant eliminates 99% of the contaminants.

Plant operations are overseen by CH2M HILL OMI, a professional operations and management company. Sewer structures throughout the rest of the city are managed and maintained by the city's public works department.

The Waste Water Treatment Plant is operated by CH2M HILL OMI and is located at 615 E A St.

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