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. Normally, 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.

Sources of cross-connection contamination

  • irrigation systems
  • fertilizer injection systems
  • hoses connected to chemical spray bottles
  • chemicals in water beds, hot tubs, swimming pools, water features, aquariums, fountains, in-home water treatment systems, solar heating systems, and swamp coolers
  • commercial and industrial cooling systems, boilers, solvents and chemicals used in manufacturing processes, liquid storage tanks, waste disposal systems, fire sprinkler systems

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.

Backflow preventor

Contact Us

Greeley Water and Sewer

1100 10th Street, Suite 300
Greeley, CO 80631

Monday - Friday 8am - 5pm

970-350-9811 tel
970-350-9805 fax
water@greeleygov.com

Water Conservation

970-336-4134
970-336-4168 for Water Budget
conserve@greeleygov.com

Emergencies

Water 8am-5pm 970-350-9811
Sewer 7am-3pm 970-350-9322
after hours970-350-9600

Other Numbers

billing970-350-9720
start or stop service970-350-9720
water taste or odor970-350-9324
water pressure970-350-9320
water restrictions & violations970-336-4134
utility line locates811

Join our mailing list