Construction of the water supply line begins this month. The new supply line will connect to existing supply lines to transport water from Standley Lake to the new treatment facility.  

Work will start on Old Wadsworth Boulevard near 92nd Avenue as soon as the week of February 9. Work is expected to continue north on Old Wadsworth Boulevard, crossing the BNSF railroad.

At 96th Avenue, the line will move east, eventually crossing under Westminster Boulevard and US-36. After crossing under US-36, the line will move north and connect to the new facility.

What to expect: 

To prepare the site for construction of the water supply line, several trees will be removed near Betty Adams Elementary. New trees will be planted once the project has been completed.  

Tree removal takes place in the winter when trees are dormant to protect neighboring trees and minimize the impact on migratory birds. Work is expected to begin as soon as Monday, February 9. For trail user safety, there will be temporary trail closures with detour signage posted for navigation. 

To keep our community up to date on the latest progress of both the drinking water facility and connecting utilities, we will provide regular email updates.

These updates will: 

Forward this email to friends and neighbors so they can also sign up for email updates to stay informed.

If you would also like to receive updates about the Water Supply Line project, please sign up for that email list below: 

Site preparations at the Westminster Boulevard Drinking Water Facility are complete! Crews will continue to complete earthwork for the facility’s foundation. Upcoming work includes:  

Building foundations are expected to start being poured next month, so you may notice concrete truck activity beginning.  

Thank you for signing up for email updates. If you have questions, please feel free to contact the project team at waterfacilityproject@westminsterco.gov or 720-464-3435.

For more information about the project, please visit our project webpage.

About the Drinking Water Facility Project

The City of Westminster is committed to providing affordable, high-quality water services. Semper and Northwest water treatment facilities currently supply more than nine billion gallons of clean and safe drinking water annually through 500 miles of pipes to our residents and businesses.  

Semper is nearing the end of its useful life, and the new drinking water facility will make Westminster’s drinking water supply more resilient to future challenges. Project components include building a new treatment facility to treat 14.7 million gallons per day (MGD), water supply line, finished water line, and supporting utilities needed to operate the facility.  

About the Water Supply Line Project

A new waterline will transport water from Standley Lake to the new treatment facility. The new water supply line will connect to existing supply pipelines to transport water to the facility. 

Construction on the water supply line is anticipated to begin in early 2026 and last up to 18 months. Please note that the timeline is subject to change.