Sprinkler backflow can occur when the water in your irrigation system reverses flow, sending contaminated water back into the potable water supply.  Obviously this is to be avoided at all cost, thus signaling the need for a sprinkler backflow preventer.

A sprinkler backflow preventer can be installed by a licensed and certified backflow expert.  Check references and do your due diligence in choosing a backflow expert.  The health and welfare of your family depends on it.

In Texas, the name to call for sprinkler backflow devices is City Backflow Testing, the professional and affordable backflow testing, repair, and installation company.