Independence advances sludge thickening project and prepares backup power RFP amid NPDES permit renewal

Independence advances sludge thickening project and prepares backup power RFP amid NPDES permit renewalThe Missouri municipality's water and sewer utilities are pushing forward on a capital program that includes summer construction for biosolids handling and resolving a multi-year administrative backlog on its EPA discharge permit.

A sludge thickening and biosolids removal project has reached 60% design, with equipment replacement and construction slated for this summer to reduce polymer usage.

The city will issue a consolidated request for proposals (RFP) next week for a backup generator and transformer installation to secure power generation for water facilities.

The utility expects to finalize its National Pollutant Discharge Elimination System (NPDES) permit by early summer, resolving a lapse caused by state and federal regulatory delays.

The city's water and sanitary sewer capital project funds show significant remaining budgets for the year, with $27 million and $19 million available, respectively.

The City of Independence, Missouri, is advancing multiple operational and regulatory milestones across its water and wastewater departments, according to updates provided at the February 19, 2026, Public Utility Advisory Board meeting. On the wastewater side, the city's sanitary sewer department has reached the 60% design threshold for a new sludge thickening program. A municipal services staff member explained that the project will allow the utility to remove biosolids and sludge from wastewater more effectively. The operational upgrade is expected to yield cost savings during the lime stabilization process by significantly reducing the amount of polymer required. The city is targeting this summer to begin the actual replacement of equipment and subsequent construction. Meanwhile, the water department is preparing to approach the market for backup power infrastructure. Staff confirmed that the city has combined two previously separate requests for proposals (RFPs)—one for a generator and another for the installation of a third transformer—into a single comprehensive procurement for backup power generation. The consolidated RFP was cleared by the finance department and is scheduled to be issued next week. The city noted that while the installation RFP is imminent, a separate procurement to purchase the actual transformer will be released in the coming weeks. In addition to capital projects, Independence is resolving a long-standing regulatory administrative backlog. The city's National Pollutant Discharge Elimination System (NPDES) permit is currently out for public comment on the Missouri Department of Natural Resources (DNR) website. Staff noted that the critical discharge permit had lapsed in recent years—attributing the delay to the EPA and DNR rather than municipal compliance issues—though regular state inspections had continued. The utility expects the renewed permit to be finalized by early summer. Financially, both the water and sanitary sewer utilities retain significant capital flexibility for the remainder of the fiscal year, which ends June 30. A finance staff member reported that the water department has utilized approximately $5 million of its $32 million amended capital projects budget, leaving $27 million available. This roughly 15.6% utilization rate aligns with proportional capital deployment patterns seen in other Missouri municipalities, such as West Plains. The sanitary sewer department has deployed roughly $2 million of its $21 million capital budget, leaving $19 million for remaining projects. Operating expenses for both departments have slightly outpaced the halfway mark for the year, a trend staff attributed to debt service payments and capital operating costs.