Irrigation System

About the Separate Irrigation System
In order to fully utilize every water resource available to them, the District has constructed a dual water supply. All new developments in the northern part of the District have two water systems: a potable system for indoor use and a separate non-potable system for use in underground irrigation systems.

The dual system is one of Colorado’s largest, and it includes separate irrigation and potable water systems that provide water for about 33,000 households and businesses. The irrigation system includes its own set of alluvial wells and completely separate infrastructure from the potable drinking water supply system. Each system includes separate pipelines, pump stations, and reservoirs used to deliver the different supplies. The dual system allows the District to maximize their water rights and ultimately supply more homes efficiently.

Mandatory Irrigation Schedule

Irrigation shall not occur between the hours of 10:00 am and 6:00 pm. 
Residents are allowed 3 watering days a week. Watering days based on even/odd last number of street address.

 Sunday Monday  Tuesday  Wednesday Thursday Friday Saturday
 Even City Utility Special Use Permit Only Odd Even Odd Even Odd

Using the System

It is important to understand that the entire separate irrigation system is a non-potable system, not for drinking. Customers served by the District's dual irrigation system will need to maintain their system's components including the Pressure Vacuum Breaker (PVB) assembly installed on the irrigation system. A link to the Operation and Maintenance Manual showing the PVB assembly is provided here.

Spring Start-up Instructions

 The District begins charging the irrigation water transmission line the week of April 15th.  Once the lines are charged, property owners will be able to access irrigation water to their separate irrigation system by completing the following instructions:

  • Follow the Startup Instructions to turn your system on, and be sure to turn it off each winter.Irrigation Startup Instructions

  • Check for broken sprinkler heads and irrigation system pipes that are broken and causing puddling in the lawn.  Turn your system off at the “stop and waste” valve until the leaks are repaired.

  • Adjust sprinklers for head-to-head coverage, and make sure they are spraying on landscaped areas, not streets or sidewalks.   

  • Adjust your time clock to irrigate your lawn appropriately for each zone, please follow the mandatory watering schedule.

  • Lawn Watering Chart

  • If you hire a professional to provide irrigation start-up and shut-down services, be sure they are knowledgeable about the separate irrigation system and familiar with the District’s Rules and Regulations.


View a PDF of the "Separate Irrigation System Spring Startup Instructions" .

Fall Shutdown Instructions
Winterizing your system is crucial to preventing damage from freezing during the winter months.
Irrigation shut down is October 15th. Make sure to have your system winterized on or before this date.

The following shutdown instruction procedures, and/or watching the short video, will guide you through a few simple steps to ensure that your system is properly shut down for the winter:

Winterizing Your Irrigation System
Dual Irrigation System Fall Shutdwn Video

Irrigation Controllers
Did you know that about half your water consumed in a year is water used outdoors? We know that scheduling your residential Irrigation Controller can be confusing. Please check the links below that will help you with setting up your controller.

Hunter X-Core Timer Programming

Rain Bird SST Smart Sprinkler Timer Programming