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Toquerville says Confluence Park treatment plant nearing completion as north‑river growth accelerates
Summary
City staff reported the Confluence Park Treatment Plant is about 65% complete, with a contractual startup date of Dec. 5 and a design intended to be expandable as multiple nearby developments push wastewater demand upward.
Toquerville City Council heard an update on the Confluence Park Treatment Plant and related reuse and pipeline work during its regular meeting.
Public works staff reported the treatment plant is about 65% complete and remains on track for initial startup under the current contract on Dec. 5, though the presenter said the work may run ahead of schedule. The city has arranged reuse and pipeline planning with the Washington County Water Conservancy District and expects those projects to feed treated water back into local systems.
The project is being planned to serve a rapidly growing area north of the Virgin River. City staff said the plant’s current design capacity is 1.5 million gallons per day and can be expanded with one additional base to about 3,000,000 gallons per day. “It’s coming along. We’re at about 65% complete. We anticipate, right now, contractually, we’ll be starting that facility up, and operational by December 5,” presenter Mike Chandler said. Chandler also explained municipal-scale reuse and pipelining with a nearby conservancy district and said an interlocal agreement was reached with Grapevine Wash Special Service District to route roughly 800 new units through Firelight and into the Confluence plant.
Council members asked about demand compared with capacity. Chandler reviewed the city’s usage assumptions and population-equivalent math: “At 200 gallons per connection... 3,000,000 gallons per day represents 15,000 homes.” He told the council the north‑side of the river could see the equivalent of about 12,000 additional homes depending on build‑out of Firelight, Grapevine Wash, Solara and other projects, and that reuse, conservation and coordination with the conservancy district will be critical to balancing supply and demand.
City staff also described a separate pump‑station and pipeline design effort that will bring additional flows from the La Verkin Mesa area into the Confluence plant and noted that some development‑level easements and BLM approvals have changed earlier pump‑station plans, reducing the need for an on‑site pump at the southwest corner of the project.
Why it matters: The Confluence Park plant is intended to be the primary north‑side wastewater hub for the city as multiple large subdivisions and service districts come online. Staff stressed that reuse and conservation programs will be a partner to the new plant in avoiding future capacity shortfalls.
Next steps: Staff said they will continue pipeline and reuse design work with the Washington County Water Conservancy District, complete interlocal agreements with special service districts, and report progress to the council as construction milestones are reached.
