This Policy addresses Article 12 of the Colorado Primary Drinking Water Regulations that states a public water system shall have no uncontrolled cross-connections to a pipe, fixture, or supply, any of which contain water not meeting provisions of the water regulations.

A cross-connection is any point in a water distribution system where chemical, biological, or radiological contaminants may come into contact with potable water. During a backflow event, these contaminants can be drawn or pushed back into the potable water system. A backflow prevention device installed at every point of cross-connection prevents contaminated water from entering the potable water distribution system.

Any hazardous cross-connection discovered to be uncontrolled will be corrected within 10 days or the water service will be shut off. The Colorado Department of Public Health and Environment will be informed of the hazardous connection and the corrective action being taken.

Identification of Potential Cross-Connections
Per Article 12, the Pine Brook Water District’s operator performed an initial survey of the public water system on May 3, 2004 (revised on March 29, 2013) and identified a list of potentially hazardous cross-connections, prioritized by degree of hazard. This list is included on an attached sheet. From this date forward, any new water service installation will be inspected for compliance with these requirements for backflow prevention.

Public Education
The Pine Brook Water District will educate system users about the potential health risk that cross-connections pose, with an emphasis on cross-connections at or within homes and other residences.

Installation of Devices
The Pine Brook Water District will require system users to install and maintain backflow prevention devices on potentially hazardous service connections, as stated in Article 12. All service connections within the water system must comply with Article 12 and the Colorado Cross-Connection Control Manual.

Each cross-connection may require a different type of backflow prevention device, commensurate with the degree of hazard posed by the cross-connection. Approval for the devices needs to be given by the water system operator or the water system engineer.

Annual Testing
Article 12 requires that backflow prevention devices be tested annually by a certified backflow prevention technician. A list of current certified technicians in our area can be obtained from local plumbers or irrigation specialists.

Record Keeping
There are no commercial users in the Pine Brook Water District. All use is for residential properties and therefore the testing and maintenance records are the responsibility of each property owner.

List of Backflow Prevention Devices
The following approved devices can be used for backflow prevention:

The Colorado Department of Public Health and Environment accepts the use of backflow preventers that have received approval by either University of Southern California Foundation of Cross-Connection Control and Hydraulic Research or the American Society of Sanitary Engineers (ASSE).

The following is a list of common cross-connections and devices that may be used to prevent backflow:

Type of Cross-Connection Backflow prevention device
Hose bib Vacuum breaker
Fire sprinkler system: Double check valve assembly on water only line. Approved reduced pressure principal backflow assembly on branch lines carrying chemicals.
Photographic processors and developers Reduced pressure principal backflow assembly
Hot water heat systems for residential use Reduced pressure principal backflow assembly
Water hauler tank filling station Air gap

Additional resource: Colorado Cross-Connection Control Manual; Corporate Discount Books, 303-815-4943

We have no commercial users in the Pine Brook Water District. We have only residential users. Our rules and regulations require a backflow prevention device be installed in the house. Since 1994, the Water District has been installing yokes with a built in check valve in new meter pits. We have been installing new yokes with the check valves as the old yokes need replacement. The Water District will send out a mailer to help educate the community about the importance of cross-connection devices and/or will publish an article in the “Pine Brook Press” which is mailed out to all residents of the Pine Brook Water District. This mailer will also be posted to the Pine Brook Water District website:

Potential Cross-Connections Sample List
System Survey conducted by Robert deHaas and Shawn Beauprez Revised March 29, 2013

Potential Cross-Connections In
Pine Brook Water District

Degree of Hazard:
Contamination or Health Hazard = High
Pollution Hazard = Low

Residential fire sprinklers Low
Residential hot water heating systems Low
Residential irrigation systems Low
Residential hose bibs Low



Cross Connection

  Copyright 2018, Pine Brook Water District. All rights reserved.
Revised 9/8/18