Backflow & Cross-Connection Control

Cross-connections occur in plumbing systems when there is an actual or potential connection between a potable drinking water pipe and a non-potable source. Some common examples of cross-connections include garden hoses that are used to fill a swimming pool, submerged sprinkler heads, or when potable water is used in industrial processes. 

If negative pressure occurs in the potable water pipe while it's in use, there is potential for contaminants from the non-potable connection to be pulled into the potable water supply. This is called a backflow event. Backflow events can be prevented by installing a backflow prevention assembly. These assemblies can be as simple as an air gap or a hose bib vacuum breaker. More advanced backflow prevention devices are required for industrial and commercial operations.

Links to relevant information about PWSD's program, mandatory forms and contact information are below.

About PWSD's Cross-Connection Control Program

Since the mid 1980’s the State of Colorado through the Colorado Department of Public Health and Environment (CDPHE) has mandated that each water district in Colorado must implement a cross-connection control program (CCCP) on the potable water system. Starting in 2020 water districts must also enforce compliance and report back to CDPHE. 

The purpose of the Parker Water & Sanitation District’s CCCP is:

• To protect the public water system from the possibility of contamination or pollution by cross-connections.
• To eliminate and/or control actual or potential cross-connections.
• To provide a continuing program of cross-connection control and backflow prevention that will effectively prevent the contamination or pollution of the public water system by cross-connection.

Test Forms and Information

• PWSD Cross-Connection Control Manual (PDF)
• PWSD Backflow Assembly Test & Maintenance Report (Fillable PDF Form)
• List of USC-Approved Assemblies (USC Foundation Webpage)
• PWSD Reduced-Pressure Installation Specifications (PDF)

Note: PWSD only accepts test reports from ABPA or ASSE-certified testers with current test kit calibration.

• PWSD Service Area Map (PWSD Service Area Boundaries Webpage)
• CDPHE Regulation 11.39 (PDF)
• CDPHE Backflow Prevention and Cross-Connection Control Rule Implementation Policy (PDF)

For questions, please contact PWSD at 720-842-4273 or the Cross-connection Control Program team.

Learn More about Backflow Prevention and Cross-Connection Control