2023 Waterline Replacement Project

Please excuse our mess! Our apologies in advance for the annoyance of traffic impacts and water shut-offs! Thank You for your patience and cooperation while we replace the waterlines to improve your neighborhood!

Schedule Update: 5/23/2023

This project (Walnut Hills community) s expected to commence June 5th with mobilization efforts beginning the week of May 28th. The project is expected to commence at Uinita Street and Briarwood Avenue.

Several locations (please see exhibits below)
This year’s project is located at two sites in the City of Centennial and generally consists of furnishing, delivering, constructing, installing, connecting, and testing approximately 9,300 lineal feet of 4-inch to 12-inch waterlines, fire hydrants, blowoff assemblies, residential service line re-activations, and existing waterline abandonment.
Kahlich Consulting
Brannan Construction
Project Contact: Joe Santaniello
Email: Joe Santaniello
(303) 332 2457

South Uinta Street Exhibit

S Uinta St Area Map

South Quince Street Exhibit

S Quince St Area Map

Contact Us

  1. Engineering

    Email Engineering

    Southgate Water & Sanitation

    3722 East Orchard Road
    Centennial, CO 80121

    Phone: 303-779-0261
    Fax: 303-779-0220


    (Water breaks and sewer backups)


    (Except holidays)
    Monday - Friday
    8 a.m. - 4:30 p.m.

    Staff Directory


  • Set-up traffic control for the safety of workers, drivers, and pedestrians
  • Dig a trench for a section of waterline to be replaced
  • Install the new waterline
  • Backfill the trench and compact the soil
  • Test the new waterline – we test to make sure it does not leak and that it is clean
  • Fully connect the new waterline to the existing system
  • Transfer water services from homes from the old waterline to the new waterline
  • Open the street to traffic before moving on to the next section of pipe replacement
  • Restore disturbed areas to similar conditions as before construction



  • Noise 
    1. Contractors communicating, operating equipment and vehicles, backup beepers, etc. all generate more noise than typical. The back-up beepers are usually the most noticeable noise – these are required for worker and resident safety
  • Unplanned Service Outages (includes water, gas, electric, internet, and phone)
    1. The contractor takes great care not to damage existing utilities, but sometimes utilities owners do not locate their existing utility in the dig area effectively (including Southgate).  Hitting an existing utility with the excavator will typically result in a service outage.  Note that these outages may not be reported to residents directly.  Call Southgate’s office for updates on unplanned service outages.  
  • Road and Sidewalk Closures
    1. Lane closures will be required daily with approved traffic plans by the applicable City jurisdiction
    2. Notifications regarding “No-Parking” zones will be posted prior to construction on your street
    3. Access to driveways may be temporarily impacted while the contractor installs pipe in front of the driveway
    4. Please mind the “No-Parking” zones – ignoring no parking zones could result in towed vehicles
    5. For your safety, avoid the active construction areas and do not walk through construction zones
  • Increased Traffic
    1. From the contractor executing work, inspectors making site visits, and detoured drivers to avoid construction zones
  • Construction Materials Stored in the Streets
    1. The contractor will have materials temporarily stored in the streets, such as dirt piles and pipe, in anticipation of using the materials for construction
  •  Messiness
    1. The streets will get messy with construction – the contractor will keep the streets and sidewalks as tidy as possible as they move through the project area
    2. At the end of the project, the contractor will do one big final cleaning of all the streets and sidewalks
  • Paving
    1. At the end of the project, the contractor will re-pave the street in accordance with City jurisdictional standards


Call Southgate at (303) 779-0261 (select option 8 after hours to speak with a Field Operator)