Meeting Summary
The Stillwater City Council and Utilities Authority held a joint study session to discuss future water treatment plant and pipeline improvements. The discussion highlighted the need for significant investment in aging infrastructure, with options ranging from rehabilitating the existing plant and pipeline to constructing entirely new facilities. No decisions were made, but staff recommended engaging a construction manager at risk and a design firm to further refine options and cost estimates.
Financial Matters
Water Treatment Plant Improvements
Initial assessment identified $70 million in needed improvements for the water treatment plant.
Water Treatment Plant Needs (next several years)
Estimated needs for the water treatment plant over the next several years, including residuals, finished water pump station, administrative lab, and electrical building.
Water Treatment Plant Option 1 (Rehab/Upgrade)
Estimated cost for rehabilitating, upgrading, and replacing facilities at the existing plant, expanding to 24 MGD.
Water Treatment Plant Option 2 (Limited Rehab, New Plant in Phases)
Estimated cost for limited rehab at existing plant, new 12 MGD plant in 2031, and another 12 MGD in 2041.
Water Treatment Plant Option 3 (Limited Rehab, New Plant All at Once)
Estimated cost for limited rehab at existing plant, new 24 MGD plant all at once in 2031, then abandoning existing plant.
Water Treatment Plant Option 4 (No Rehab, New Plant Now)
Estimated cost for no rehab at existing plant, constructing a new 24 MGD plant now, then abandoning existing plant.
Raw Water Infrastructure Option 1 (Parallel Line)
Estimated cost for coating/repairing existing 36-inch line, constructing new parallel 36-inch line, and expanding pumping station.
Raw Water Infrastructure Option 2 (New 42-inch Line, Lake McMurtry Backup)
Estimated cost for new 42-inch water line, abandoning existing 36-inch line, expanding pumping station, and developing Lake McMurtry as a backup.
Raw Water Infrastructure Option 3 (Partial Parallel Line, Terminal Reservoir)
Estimated cost for parallel lines in highest risk areas and constructing a terminal reservoir for backup.
Coming Up
Watch For
- Further discussion on water treatment plant and pipeline improvements after engaging a construction manager at risk and a design firm.
Agenda Summary
Future Water Treatment Plant and Pipeline Improvements Discussion
Discussion led by Bill Millis and Monty Carnes regarding the current state and future needs of the city's water treatment plant and raw water pipeline infrastructure. Four options for the water treatment plant and three options for the raw water infrastructure were presented, along with cost estimates and non-monetary factor rankings.