Sioux City advances Highway 75 water main upsize and extends wastewater plant advisory committee

Sioux City Field Services, Iowa · Meeting date: June 22, 2026 · Published: June 23, 2026

The City Council has greenlit plans for a major 24-inch water main replacement funded by the state revolving loan fund, alongside storm sewer improvements and crucial chemical procurement for its wastewater operations.

Key points

Approved plans for the Highway 75 Water Main Upsize Project, which includes replacing 12,250 linear feet of 24-inch water main using Water Iowa Revolving Loan funds.
Advanced the 13th Street Storm Sewer Improvements Project to support the Midtown Terrace development, backed by Storm Water Abated GO Bonds.
Extended the Wastewater Treatment Plant Reconstruction and Design Advisory Committee's term to September 30, 2026, as the city finalizes pricing and scope for the reconstruction.
Authorized multiple operational purchases, including valve maintenance skid systems and bulk chemicals for water and wastewater treatment.

Full report

Sioux City, Iowa, is moving forward with key water and wastewater infrastructure investments following a June 22, 2026, City Council meeting where officials approved plans for major pipeline replacements and extended oversight for the city's wastewater treatment plant reconstruction. The council unanimously approved plans, specifications, and the estimated cost for the Highway 75 Water Main Upsize Project. The project involves the replacement of approximately 12,250 linear feet of 24-inch water main from 8th Street to Singing Hills Boulevard. The project is financed through Water Iowa Revolving Loan funds, with an early construction start date slated for August 2026 and an estimated completion timeline of 150 working days. In a parallel move to support local development, the council also approved plans for the 13th Street Storm Sewer Improvements Project. The work will add water main, sanitary sewer, and storm sewer infrastructure between Douglas Street and Pierce Street to support the Midtown Terrace Project. Backed by Storm Water Abated General Obligation Bonds, the engineer's opinion of probable construction cost is set at $245,865. At the utility management level, the council approved a resolution extending the term of the Wastewater Treatment Plant Reconstruction and Design Advisory Committee to September 30, 2026. The committee, which provides stakeholder oversight on the reconstruction scope and costs of the city's most significant infrastructure investment, was extended to allow continued involvement during the final stages of project pricing. During the meeting, it was noted that officials hope the committee's work will reach a conclusion by the new September deadline. The council also authorized several operational procurements for the Utilities Department. A purchase order was awarded to EH Wachs Company for $83,198 to supply two valve maintenance skid systems, which will be mounted on utility flatbed trucks to assist staff in turning valves. Additionally, the city secured supply chains for essential treatment chemicals, approving a one-year agreement with PVS DX, Inc. for caustic solution at $809 per dry ton for the wastewater treatment plant, and exercising a renewal option with Hychem, Inc. for coagulant at $0.43 per pound.

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Source: City Council Meeting, Sioux City Field Services