The City of Colleyville, Texas required annual customer service inspection for cross connection control so that the Colleyville water supply will remain pollutant-free from the effects of backflow.

Cross connection inspectors conducting cross connection duties within the City of Colleyvile must be approved and licensed by the city manager and must meet the following requirements:

• Be under contract with the City of Colleyville
• Attend backflow certification courses approved by the City of Colleyville.
• Every backflow tester must be certified as a backflow tester and show evidence that he/she is insured and bonded to perform backflow services on backflow preventer valves and back flow devices, and all licenses with the State of Texas are current.

City Backflow Testing tests, maintains and repair all back flow devices in Colleyville, Texas.