WTP SCADA and Filter Control System Improvements

The City of Carrollton is soliciting proposals for the WTP SCADA and Filter Control System Improvements Project at its Water Treatment Plant in Georgia. The primary objective is to modernize the plant's valve control system by abandoning the outdated DeviceNet communication network in favor of conventional discrete and analog wiring. The project requires the installation of dedicated Allen-Bradley PLCs and touchscreens for each of the ten conventional filters to enable standalone control, removing the dependency on Supervisory ControlLogix PLCs. Additionally, the selected integrator must replace the existing SCADA system with new HMI software and computer hardware. The contractor is responsible for providing all necessary equipment, materials, labor, and appurtenances, including all applicable taxes, fees, and freight to Carrollton. Proposals must be submitted in sealed triplicate by 2:00 p.m. local time on December 3, 2026, to the Carrollton City Hall Third Floor Conference Room. To be considered, contractors must obtain the official contract documents and be added to the bidders list. The contract will be awarded based on the highest total score, although the City reserves the right to select the bidder it deems most advantageous. Successful bidders will be required to provide performance and payment bonds each totaling 100 percent of the bid amount. The primary point of contact for this solicitation is Dalton Appleby.