Cross-connection Control Program

A cross-connection is any connection to the drinking water system that could introduce pesticides, fertilizers, used water, fluids, gases, or anything else into the water distribution system. Typically, water flows out of the distribution system under pressure. When a cross-connection exists, a drop in water pressure can cause a reversal of flow, allowing harmful substances to enter the public water system. Greeley’s cross-connection control program focuses primarily on containment and prevention.

For more information, please contact backflow@greeleygov.com or at (970) 336-4012.

Backflow Testers must be certified, see the list of local testers below.

How You Can Help

• Install backflow prevention assemblies to prevent potential cross-connections, and have a certified backflow tester inspect and test your assemblies once a year to ensure proper function.
• If you suspect you may have a cross-connection, contact a qualified plumber familiar with cross-connections, hydraulics, and pollution factors.
• Be observant. Check for potential sources of cross-connections around your home, business, or industrial site.
• Never leave hoses in buckets, pools, or sinks.

Backflow Prevention

A backflow prevention assembly is necessary for all irrigation systems. A copy of a certified backflow tester's report is required to obtain final approval for a sprinkler system permit.

All commercial and industrial customers must install backflow prevention assemblies on their water service lines, fire sprinkler systems, and irrigation systems. In the past few years, commercial and industrial sites in Greeley were surveyed to identify potential cross-connections. Each site's water service system was inspected for potential hazards.

Residential customers should have backflow prevention assemblies on fire sprinkler systems and irrigation systems.