San Antonio Water Systems (SAWS) tested the CAP cover in their equipment. They reported 0.00 gallons per minute at 3 inches of head pressure above the cover, 0.00 at 6 inches, and 0.00 at 9 inches. They stated that this was "the best performance by any cover they tested...by far." Note: the water flow sound in the video is water leaking through the tank frame, not through the cover and frame.
"Infiltration and Inflow" (I&I) is the industry term used to describe storm water entrance into the sanitary sewer system. I&I increases treatment costs and can cause Sanitary Sewer Overflows (SSO) when the volume exceeds the pump or plant capacities. State and Federal EPA departments penalize local municipalities with heavy fines for SSOs. Watertight CAP covers reduce I&I preventing water from entering through to cover and frame.
After installing CAP traffic-rated composite covers and frames at 46 targeted manholes, Baytown, TX, city officials reported dramatic reductions in pump run times at their lift stations convincing them that the I&I in that section of town had been measurably reduced by using CAP covers...Just CAP That! ®