Wastewater Treatment Plant Phosphorus Limit Project

As part of the regulatory requirements for wastewater treatment plant operation, the Village received its final National Pollutant Discharge Elimination System (NPDES) permit from the Illinois Environmental Protection Agency (IEPA) on October 31, 2014. Part of the NPDES permit for all dischargers to the Fox River, including the Village of Cary, are new limits on phosphorous.

​In accordance with the Village's NPDES permit conditions, a Feasibility Study was completed and final engineering design for the improvements is now underway.  The Village will be implementing a biological phosphorus removal (BPR) process that will enable the Village to meet the requirements in a cost effective and scaleable manner that reduces the overall use of chemicals in the wastewater treatment and phosphorus removal process.

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Project Implementation Schedule

Submit Wastewater Feasibility Study Plan to IEPA April 2016 (COMPLETE)
IEPA Approval of Feasibility Study July 2016 (SUBMITTED FOR APPROVAL)
Complete Final Engineering Design February 2017 (UNDERWAY)
Complete Construction October 2018
Comply with New Total Phosphorus Limits October 2019