South Street WWTF Upgrade Project Close Out Update - Summer 2026

The WPCA is pleased to report that the South Street WWTF Upgrade project has been complete and closed out with the project’s contractor.  See below for some project highlights.

• The complex and extensive South St. Wastewater Treatment Facility (WWTF) upgrade project, substantially complete in 2024, has resulted in the upgraded WWTF meeting one of the strictest effluent phosphorus limits in the state.  
• The upgraded WWTF, operating 24 hours a day, continues to meet its permit limits, using new energy efficient systems and processes to do so.  
• While the Project was delayed, the WCPA and its team successfully completed the Project with uncompromised quality of the work and in a fiscally responsible manner. Not only was the Project under budget, but the Town recovered $1.146 million in liquidated damages from the Contractor in the Summer of 2026 for the delays.
• The WPCA also obtained approximately $12 million in grant revenue from the State’s Clean Water Fund Program.
• Finally, due to successful planning and execution, the WPCA is not planning a sewer rate increase for FY 2027.