Groundwater and Surface Water Mixing Study

The City of Barrie is soliciting proposals under solicitation number FIN2026-070P for a qualified consulting firm to conduct a Groundwater and Surface Water Mixing Study. This project, estimated to take 15 to 18 months, aims to determine the operational conditions under which treated groundwater and surface water can be mixed within the distribution system while maintaining regulatory compliance, public health protection, and water quality. The study focuses on groundwater sources in Pressure Zone 1, specifically Wells 14, 12/15, and 17/18, as well as future sources including Wells 19, 20, and 21/22. The work is a recommendation from the city's Water Supply and Water Storage and Distribution Master Plan Updates and must comply with Ontario drinking water regulations. The selected consultant will be responsible for delivering seven key technical memoranda and a final project report covering source water characterization, blending scenarios, hydraulic and water quality modelling, corrosion assessment, and an implementation roadmap. Mandatory requirements include the submission of a Quality Management Plan and the use of accredited laboratories for sampling and analysis. Proposals must be submitted electronically by November 3, 2026, and will be evaluated based on rated criteria and minimum threshold scores. The contract involves monthly invoicing in Canadian funds, with payments tied to the completion of specific tasks and deliverables as outlined in the project schedule.