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Public hearing held on Wastewater Treatment Plant project

By Josh Jones
Times Tribune Editor 

TROY — The City of Troy held a public hearing on March 21, which concerned the next steps for the major wastewater treatment plant (WWTP) improvement project.

According to Times Tribune archives, the current wastewater treatment plant was built in 1997 and the normal life expectancy of a wastewater plant is 20 years. The Times Tribune reached out to City Engineer Tom Cissell who explained that the city’s consultant, TWM Inc. presented information concerning the project during the public hearing.  

“Additional capacity is needed at the WWTP because the City is planning for 50% growth by 2038,” Cissell said. “The project is estimated to cost between $45 million and $55 million and will be built in phases from 2024 to 2029.”

Cissell explained the different phases to the project. 

“Phase one will be two years and will include improvements to the sludge processing system and constructing a new sewer main on the north side of town to accommodate growth,” Cissell said. “Phase two, three, and four includes different improvements in the WWTP from 2027 to 2029.”

According to TWM’s web page on the project, TWM performed flow monitoring at five locations to evaluate the infiltration/ inflow (I/I) of the five sub-basins and identify the problem areas. Using the flow data, TWM then developed several recommendations to upgrade the collection system and provided cost estimates for each and also proposed improvements to the city’s wastewater treatment plant. The new plant improvements, which will be completed in four phases, include a new biological treatment process, a new filtration system, a new disinfection system, and improvements to the solids treatment/handling systems.

Cissell said that on March 31, TWM will send an email to the IEPA summarizing public comments from the meeting. 

“In July, the city will find out if the IEPA accepted the city’s loan application to build the improvements,” Cissell said. “TWM’s representative thought the city’s application would score well given the age and capacity restrictions of the current plant.”

Written public comments on this project will be accepted until March 31 and should be addressed to Serena Page, Project Manager, TWM Inc. 4940 Old Collinsville Road, Swansea, IL. 62226, email at or call (618) 624-4488. 

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