Denton Sets $628M Estimate for Water Plant Expansion
A 20-million-gallon-per-day expansion remains in preconstruction, with an early works package targeted for the second quarter of 2027.
Denton’s October 19 utility presentation places a $628 million construction estimate against the expansion of its Ray Roberts Water Treatment Plant. The planned addition would provide 20 million gallons per day of treatment capacity using low-pressure membrane units.
The estimate is not a newly awarded $628 million construction contract. The city identifies the work as preconstruction, with a second-quarter 2027 start and second-quarter 2032 completion target.
Project at a Glance
- Construction estimate:
- $628 million
- Added treatment capacity:
- 20 million gallons per day
- Delivery target:
- Q2 2032
- Current stage:
- Preconstruction · Q2 2027 estimated start
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Treatment and pumping scope
The city’s scope includes raw-water pumping upgrades, chlorine dioxide disinfection, intermediate ozone contactors, a pump diffusion vault and flow separator. Flocculation and sedimentation basins, a transfer pump station and another clear well complete the listed process additions.
Design and testing precede early works
Thirty-percent plans and a cost model were reached in April 2026. The October update places inclined-plate-settler and membrane pilot studies in their final phases, with membrane examination planned for the end of October and results to be sent to the state environmental regulator.
The next stated milestones are 60-percent plans in January and an early package in the second quarter of 2027. These are design and procurement targets; the presentation does not confirm that the expansion’s main field construction has begun.
Keep the expansion separate from plant improvements
The plant also has a separate capacity re-rating and performance-upgrade project nearing completion. Its scope and construction contract are distinct from the $628 million expansion. Combining the two would misstate the cost and progress of this project.