Backflow is the undesirable reversal of the flow or water or mixtures of water and other undesirable substances from any source (such a used water, industrial fluids, gases, or any substance other than the intended potable water) into the distribution pipes of the potable water system.
Why are the backflow prevention assemblies needed?
It protects the potable water supply from contaminants being introduced into the potable water system by back siphonage or backpressure.
Texas Water Code Chapter 37, Texas Health & Safety Code chapter 341.033 and .034, Title 30 Texas Administrative Code, Chapter 30, Subchapters A & B and Chapter 290 states that “All backflow prevention assemblies shall be tested upon installation by recognized backflow prevention assembly tester and certified to be operating within specifications. Back flow prevention assemblies which are installed to provide protection against health hazards must also be tested and certified to be operating within specifications at least annually by a recognized backflow prevention assembly tester.