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Major upgrades underway in northwest metro area

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Crew install pipe
A crew works to install a section of the new 66-inch diameter Northwater pipeline. Photo credit: Denver Water.

Work on the new Northwater pipeline, a 5.5-foot diameter pipeline on the northwest side of the metro area, is entering a new phase.

The 8.5-mile pipeline will run between Denver Water’s new, state-of-the-art Northwater Treatment Plant, being built near Ralston Reservoir north of Golden, and the site of the Moffat Treatment Plant in Lakewood, which started operations in 1937.

The new plant and the pipeline project will update major elements of Denver Water’s drinking water treatment and distribution systems in the northern part of its service area.

The new, $80 million pipeline is replacing an old line installed in the 1930s. The new pipeline will carry drinking water from the Northwater plant to storage and distribution facilities at the Moffat site.

The pipeline project started in 2017 when workers began boring a tunnel for the pipeline under Interstate 70 in Wheat Ridge.

This year, crews are starting work on the 2.8-mile central segment of the project, between West 44th Avenue, near Eldridge Street, and West 60th Avenue, west of Easley Road. They’re also wrapping up work on the western segment between Highway 93 and West 60th Avenue. Work on the remaining segment is scheduled to begin in 2021.

The new pipeline is expected to be complete in 2022. The new Northwater plant is expected to be finished in 2024.