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Backflow 

PROTECTING THE PUBLIC WATER SUPPLY IS EVERYONE’S RESPONSIBILITY:
The City of Frisco takes pride in the water we provide, and we strive for uninterrupted service. The water entering the distribution system is a protected, potable water meeting or exceeding all State and Federal standards. Once the potable water enters the point of service, it is the responsibility of the property owner to ensure backflow does not occur.  
 

WHAT IS BACKFLOW? 
Backflow is the undesirable reversal of the flow of water in a potable water distribution system as a result of a cross connection. In other words, water flow going in the wrong direction. There are two types of backflow: 

Backpressure - This occurs when water generated pressure from a private service exceeds the water pressure provided by the City’s water system. Causes for increased pressure from a private system may include a pump, elevated tank, boiler or other condition.  

Backsiphonage - This occurs when backflow is caused by negative or reduced pressure in the supply piping.  

WHAT IS A BACKFLOW PREVENTION ASSEMBLY?
A backflow prevention assembly is a mechanical device used to prevent backflow. The check valves are designed to close if the water flow is reversed to prevent backflow. The assemblies have test ports for periodic testing. The type of assembly required depends on the type of potential hazard found after an inspection by the Public Works Backflow Inspector. 

WHO CAN INSTALL A BACKFLOW PREVENTION ASSEMBLY?
All backflow prevention assemblies require a plumbing permit from the City of Frisco Building Inspection Division before installation. A licensed plumber, registered with the City of Frisco, may install the required backflow assemblies. The backflow assembly on an irrigation system may be installed by a licensed irrigator who is registered with the City of Frisco. 

WHY MUST I INSTALL A BACKFLOW PREVENTION ASSEMBLY?
Approved backflow prevention assemblies must be installed to comply with City of Frisco Ordinance No. 06-05-52 as well as State and Federal Environmental Laws.  Certain backflow prevention assemblies with test ports must be tested upon installation and thereafter annually by a licensed backflow tester. A fee, as stated in the fee schedule link (provided below), per assembly, will be charged by the City of Frisco for annual inspections. This fee is in addition to any testing charges by the backflow tester.  

HOW DO I FIND A BACKFLOW TESTER?
A list of registered Backflow Prevention Assembly Testers is available by contacting the Public Works Backflow Inspector at 972-292-5819. 

BACKFLOW TESTERS REGISTERED IN FRISCO

EXTERNAL BACKFLOW PERMITS EXPIRING

DOWNLOAD BACKFLOW TESTER REGISTRATION FORM
WHICH BACKFLOW ASSEMBLIES ARE DUE FOR TESTING?

BACKFLOW PERMITS EXPIRING

 

WHAT ARE FRISCO'S BACKFLOW TESTING RULES?

CITY OF FRISCO BACKFLOW ORDINANCE

VIEW FEE SCHEDULE


FOR QUESTIONS, CONTACT:
LINDA GRIFFIN, Senior Backflow Inspector
11300 Research Road
Frisco, Texas 75033
972-292-5819
972-292-5890 (fax)

City of Frisco, Texas
George A. Purefoy Municipal Center

6101 Frisco Square Blvd
Frisco, Texas 75034
972-292-5000
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