Backflow inspections are required by law in the state of Texas every year to prevent water contamination. Protecting the public water supply is everyone's responsibility. 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." - City of Frisco. Digital Rain LLC offers Backflow Inspections to personal and commercial properties all year long by our licensed Backflow Inspector.