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Minnetrista discusses multimillion-dollar trunk mains, developer contributions and timing for western growth
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Summary
Councilors reviewed plans to upsize mains near the new water plant to 12–20 inches for transmission to western areas, debated whether developers or the city should fund trunk upgrades, and asked staff for updated cost estimates and schedules aligned with a water-plant completion by Jan. 2028.
Minnetrista City Councilors spent the bulk of a April 6 work session discussing proposed future water‑main extensions, trunk‑infrastructure sizing and funding as the city begins operating a new water treatment plant and developers advance plans for the Ekrati property.
Public works director Gary Peters summarized construction progress at the plant — excavation is underway, a crane has been delivered, on‑site observation is increasing and the project has a public website for updates — and said the plant is intended to be substantially complete by January 2028 with final completion around July 1, 2028.
Staff and the consultant team outlined pipeline recommendations that include a combination of 20‑, 16‑ and 12‑inch mains on the south transmission corridor and 12‑ and 16‑inch upgrades on the north. Peters said the city standard for neighborhood mains is 8 inches (normally developer‑installed) and that anything larger required by the city would typically be a city expense above the developer’s required 8‑inch installation. “Within the development they only need 8 inch… The 12 inches benefit the community to help with transmission of water from the water plant to the west,” Peters said.
Councilors pressed staff on long‑term capacity and whether installing larger pipe now would avoid higher costs and disruption later. Peters said the plant was modeled to treat 2,100 gallons per minute with 2,800 gpm pumping capacity and that, without additional trunk mains, the system could push an extra 1,500 gpm with minimal pressure increase; beyond that the city could see significant pressure rises affecting neighborhoods.
Councilors and developers debated phasing and financing. Staff suggested options: collect trunk fees and connection fees over time, negotiate developer upcharges or prepayments, or bid larger packages to capture unit‑price economies. A councilor pointed out discrepancies between packet figures and the presentation: packet materials referenced a $1.87 million line item while staff said some slide figures were updated; staff acknowledged some packet numbers were older and said they would reconcile the estimates.
Other technical and siting matters included a proposal to avoid MnDOT disturbance by seeking an easement from Three Rivers Park District and using directional drilling to limit surface impacts. Staff said some north‑side improvements are critical to reduce single‑point failures and to support future tower sites.
Staff said they will return with more detailed assumptions, updated cost estimates and phasing recommendations. No formal vote was taken on construction or funding decisions during the work session.
