The City of Richland Hills, Texas maintains a pollution-prevention program through its Public Works Department in accordance with federal and state clean water laws.  Contractor registration is required for all backflow testers, and certification and licensing of those testers must be maintained yearly. Backflow occurs when the water pressure at the city end of the

The City of Lewisville, Texas, regulates the proper use and installation of backflow devices in accordance with federal, state and local ordinances.  For more information, go to the Lewisville website at http://www.cityoflewisville.com/index.aspx?page=811. The purpose of Lewisville’s backflow regulations is to protect the public water supply from the possibility of contamination due to backflow and to

The City of Kennedale, Texas regulates the installation and testing of backflow prevention devices through its Building Inspection and Water Operation Departments. For information go to http://www.cityofkennedale.com/104/Water-Wastewater-Operations. In accordance with federal, state and local regulations, backflow devices must be annually inspected.  These devices are designed to prevent the entry of contaminants into the potable water supply.