St. Louis advances $11.5 million in treatment plant and sewer rehabilitation contracts

St. Louis advances $11.5 million in treatment plant and sewer rehabilitation contractsThe Metropolitan St. Louis Sewer District has introduced funding for major digester improvements at its Missouri River facility and a $5 million cured-in-place pipe rehabilitation project to meet ongoing Consent Decree requirements.

A $6.5 million appropriation will fund the replacement of digester membrane covers and new waste gas burners at the Missouri River WWTF.

SAK Construction secured a $5.02 million contract to rehabilitate over 39,000 linear feet of sanitary sewers using CIPP methods.

The sewer rehabilitation work is mandated by the district's Consent Decree to reduce infiltration in deteriorated infrastructure identified through annual inspections.

The Metropolitan St. Louis Sewer District (MSD) advanced more than $11.5 million in capital improvement projects during its April 9, 2026, Board of Trustees meeting, targeting aging treatment plant infrastructure and system-wide sewer deterioration. The largest of the measures was a $6.5 million appropriation for the Missouri River Wastewater Treatment Facility (WWTF) to renew the plant's aging digester gas system. KCI Construction Company, the sole bidder, will execute the $5.69 million lump-sum contract. The scope of work includes removing and replacing the membrane covers on Digesters 3 and 4, alongside the construction of two new waste gas burners. The project is expected to be funded by bond proceeds and completed within 660 days. In a parallel effort to address the district's Consent Decree obligations, the board introduced a $5.05 million appropriation for the 2026 Contract B Infrastructure Repairs program. SAK Construction secured the project with a low bid of $5.02 million. The rehabilitation contract involves repairing approximately 39,336 linear feet of sanitary sewers, ranging from 6 to 63 inches in diameter, utilizing cured-in-place pipe (CIPP) technology. The targeted sewers, spanning the City of St. Louis and St. Louis County, were flagged through the district's annual Capacity, Management, Operations, and Maintenance (CMOM) inspection program. The work aims to reduce infiltration in damaged lines and is slated for completion within 365 days. It is expected to be funded by a low-interest loan from the Missouri State Revolving Fund. The board also advanced several smaller infrastructure measures, including a $305,000 appropriation for the South Brentwood Boulevard Sanitary Relief project to eliminate a constructed sanitary sewer overflow outfall, and a $325,000 storm sewer project in Greendale designed to alleviate residential flooding.