Opportunity
Sioux City Granicus #10373821
Sioux City Wastewater Treatment Plant Phase 1 Improvements Construction Solicitation
Posted
September 15, 2026
Identifier
10373821
NAICS
237110, 237990
The City of Sioux City is initiating a major construction procurement for Phase 1 Improvements at its Wastewater Treatment Plant (WWTP): - Government Buyer: - City of Sioux City, City Clerk's Office - Project Scope: - Comprehensive upgrades to the WWTP at 3100 S. Lewis Boulevard, Sioux City, IA - Estimated project value: $325 million - Key improvements include: - Replacement of mechanical screens and grit equipment in the preliminary treatment building - HVAC system upgrades - Replacement of primary and final clarifiers - Construction of new primary sludge pumping and intermediate lift stations - Aeration tank rehabilitation and conversion to a three-stage process - Aeration blower replacement and RAS pump station replacement in a new secondary control building - Rehabilitation of an anaerobic digester for sludge storage - Plant-wide odor control system installation - Installation of new standby emergency power generators and main switchgear replacement - SCADA system upgrades - Demolition of unused structures and buildings - Associated HVAC, plumbing, electrical, instrumentation, and site/civil improvements - Unique/Notable Requirements: - Compliance with Buy American provisions (American Iron and Steel) - Preference for Iowa-grown products and labor - Adherence to nondiscrimination and federal funding requirements - Bidders must not be on the U.S. General Services Administration Excluded Parties List - No specific OEMs or vendors are named in the solicitation - Construction documents are available via QuestCDN and the City’s website
Description
The City of Sioux City is soliciting sealed bids for the construction of the Wastewater Treatment Plant Facility Plan Phase 1 Improvements Project located at 3100 S. Lewis Boulevard. This project is the first phase of a multi-phase effort aimed at addressing safety and odor concerns, enhancing reliability, and expanding capacity. Bids must be submitted by October 29, 2026, and the project is expected to be completed on or before December 31, 2031. The solicitation includes requirements such as bid bonds, preference for Iowa-grown products and labor, and compliance with Buy American provisions.