Back flow preventors are those devices specifically designed to prevent the harmful effects of backflow and back-siphonage. To understand better how a back flow preventor works, one must first understand the nature of back flow. Back flow generally occurs when there is a sudden drop in water pressure from the main water supply to a

As part of Phase II of the Texas Pollutant Discharge Elimination System Program, storm water discharges from small municipalities located in urbanized areas are required to employ a program that reduces pollutants from storm water runoff.  This is also in accordance with the Federal Clean Water Act and state and local regulations. This program protects

The City of Richland Hills, Texas maintains a pollution-prevention program through its Public Works Department in accordance with federal and state clean water laws.  Contractor registration is required for all backflow testers, and certification and licensing of those testers must be maintained yearly. Backflow occurs when the water pressure at the city end of the