The Duncanville, Texas, backflow prevention program is spelled out on the Public Works page of the Duncanville City website. It is fairly standard with regards to backflow prevention, very similar to other back flow prevention programs throughout Texas:

“The purpose of a Cross Connection Control Program is to identify potential cross connections on the public water system and require that the proper backflow prevention device is installed at the potential source.

Definition of Cross Connection

Cross Connection – a physical connection, directly or indirectly (actual or potential), between a drinkable water system and a liquid or gas that could make the water unsafe to drink. Wherever there is a cross connection, there is a potential threat to public health.”

There are several requirements spelled out in the backflow prevention program. We have listed them below.  If you have questions about any of them, give us a call at (817) 996-2000. We are City Backflow Testing, and we have the answers you need about backflow service.

Testing on backflow devices, for commercial buildings, must be conducted yearly, and they must be conducted by licensed backflow inspectors/plumbers.  A list of licensed and approved testing companies for backflow repair is available on the City’s website.  In addition, residential properties with irrigation systems must also have approved cross connection devices installed and inspected yearly.

The type of cross-connection protectors will depend on the type of irrigation system.  Again, these requirements are available on the Public Works page of the City’s website.

The nature of backflow!

Backflow occurs when there is a significant drop in water pressure between the potable water supply facility and the homes and businesses which are served by that water supply.  A drop in water pressure results in the reversal of flow, meaning contaminated water will flow back to the potable water supply.  This is a simply law of physics and is always a possibility in any water system. Although it is always possible it is prevented, daily, in every city across this country by means of backflow preventers, items like check valves and air gap parts.  These backflow preventers sense when water pressure drops, and they essentially shut down and block any water flow in the opposite direction.  Obviously this is an important task and one which is guarded against by annual backflow inspections.

When a backflow inspection is undertaken, certain steps are required.

We use USC 10^th Addition Testing Procedures:

• Notify- Notify the customer we are here for testing your backflow preventers
• Identify- Make sure serial number is correct and that we have the right assembly
• Inspect- Make sure there are 4 test ports and 2 Shut off handles
• Observe- Attach test equipment and follow proper testing  procedures  for this assembly
• Test Reports- Enter values for the  assemblies
• Turn in all test Reports to the local water Purveyor or City

By taking these steps, we ensure that your backflow system and cross connection components are working properly.

If you are a resident of business owner in Duncanville, give us a call and we can discuss the finer points of backflow testing so that you will be covered for all requirements. Again our number is (817) 996-2000. We are standing by to serve you, with years of experience as our guide.