Glenbard Wastewater Authority - Primary Clarifier Rehabilitation Project

October 3, 2025

The Glenbard Wastewater Authority has hired Trotter and Associates, Inc. to move forward from the design phase to resident engineering services for the primary clarifier rehabilitation project. As part of these upgrades, the primary clarifiers, gravity thickeners, solids pumping system, and electrical and control systems will be replaced and upgraded due to aging infrastructure.


The Authority has completed a 47 MGD bypass with six suction lift pumps and three overland force mains. This bypass allowed the primary clarifiers to be taken offline, enabling the installation of diversion structure gates that includes three new downward-opening weir gates and two new sluice gates. Over the following months, each clarifier will be taken out of service independently for complete removal and replacement with new stainless-steel mechanisms.


The project team included Vissering Construction, Connelly Electric Co., Dahme Mechanical Industries, and Tri-R Systems, Inc.

To learn more, follow TAI’s Current Projects at
trotter-inc.com, or contact one of our team members.