Backflow Prevention & Avoiding Cross-Connections

  1. Cross-Connection
  2. Backflow
  3. Definitions

A cross connection is an arrangement of piping or more commonly a garden hose between the potable water or drinking water supply and any other substances. Examples of a cross connection include:

  • A garden hose placed into a spa, swimming pool, or pond.
  • Use of a device to apply pesticides or fertilizer to a lawn via a garden hose.
  • A heat recovery unit or heat exchange unit.
  • Attaching a well to a dwelling that is serviced by a potable water system.
  • Use of a hose to unclog a drain or sewer system.

Reporting Cross-Connections

Anyone observing a Cross Connection or a potential Cross-Connection should inform their local office. You can now email here for Backflow Test Report submissions, questions about Backflows, questions about cross connects and questions about connections to reclaim water system.  

Fixtures That Have a Potential for Cross Connection

Fixtures that have a potential for cross connection include

  • Agriculture Mixing Tanks
  • Auxiliary Water Supply
  • Dishwashers
  • Garden Hose
  • Ornamental Ponds
  • Photographic Developers
  • Sinks
  • Solar Energy Systems
  • Spas
  • Sprinklers
  • Swimming Pools
  • Toilet Flush Valves
  • Water Softeners
  • Watering Troughs

Here is the most updated backflow devices and specifications for each one Backflow Devices Update 7.26.21