What is the TCEQ preferred method for Cross Connection Control?

The preferred method for Cross Connection Control, according to the TCEQ, is the Physical Air Gap. A Physical Air Gap is a vertical separation between the water supply outlet and the flood level of a receiving vessel. This method is highly effective because it provides a complete separation between the potable water supply and any potential contamination source. It is a simple and reliable means of backflow prevention, ensuring that water cannot flow back into the system from any negative pressure or contamination situation.

In many cases, the air gap is the most effective and safest method of preventing backflow. By maintaining this physical separation, the risk of contaminants entering the drinking water supply is minimized, adhering to health and safety standards set by regulatory bodies. While other methods may be useful in specific applications, the physical air gap offers the highest level of protection against cross-connection hazards.