Summary of Procedures Prior to Installation of Backflow Preventer:
All backflow prevention assemblies and approved testers shall be registered with Garland Water Utilities. All backflow prevention assemblies shall be nationally recognized and certified as an approved testable device.
All backflow prevention assembly installations require compliance with the city's Building Inspection Office (a permit is required).
All testing shall be performed by a Texas Commission on Environmental Quality (TCEQ) approved licensed tester who is registered with Garland Water Utilities.
All backflow prevention assemblies shall be tested according to Texas Commission on Environmental Quality (TCEQ) regulations prior to the permanent activation of the plumbing system and thereafter annually.
All backflow prevention assemblies shall have plastic or brass caps placed upon all test cocks (No Galvanized Plugs).
All backflow prevention assembly devices that do not have the manufactures identification plate attached to the device and that do not have a legible serial number must be replaced with a new device.
All backflow prevention assemblies are required to be registered through the Garland Water Utilities department.
All backflow prevention assemblies shall be installed by licensed plumbers, irrigators or fire sprinkler technicians who meet the requirements of the city's current plumbing code. All backflow prevention assemblies must be tested after installation by an approved city registered tester. Test reports must be submitted to Garland Water Utilities, 2343 Forest Lane, Garland, Texas 75042 within 10 days of the test.
All testers must register with Garland Water Utilities. An annual, non-refundable registration fee of $75 is required (payable by check, money order, or credit card). Testers must also purchase a testing form booklet - 30 forms - for a fee of $25 (payable by check, money order, or credit card).
Cross Connection Explained
A cross connection is a connection between a potable drinking water supply and a possible source of contamination or pollution.
Under the provisions of the Safe Drinking Water Act of 1971, the Environmental Protection Agency (EPA) established national standards for safe drinking water. Each state is required to enforce the various regulations of the Safe Drinking Water Act and how it relates to its state laws. To meet these new provisions, the Texas Commission on Environmental Quality (TCEQ) on January 1, 1996, enacted a new state law which requires the public water suppliers to implement and enforce the Cross Connection Control Program requirements located in title 30 Texas Administrative code (TAC) Chapter 290 of the Rules and Regulations for Public Water Suppliers.
In 1999 the City of Garland adopted a new Cross Connection Control and Prevention Ordinance. The Utility conducts periodic water use system inspections as required by this ordinance. These surveys assist in determining if any connections or uses of the potable water supply are inadvertently creating a health hazard to the public.
Backflow is the undesirable reversal of flow in a potable water distribution system.
Water that is always under pressure can only flow in one direction. Then how can water flow in reverse? Water will always flow towards the point of lowest pressure. If a water main were to break or if the fire department opened several fire hydrants to help fight a fire, the pressure in the water main could drop. The demand upstream could cause a reversal in flow.
Cross connections and the possibility of backflow need to be recognized so they do not occur. A garden hose submerged in a hot tub, swimming pool, car radiator, or attached to an insect/fertilizer sprayer could siphon the liquid back into the water main.
Backflow prevention devices are designed to protect the public water system from these types of concerns.