Inflow and infiltration in the wastewater collections system draws a utility’s attention. It’s an ongoing threat for sanitary sewer overflows and has a substantial cost once it is received at the wastewater plant. As one senior plant operator puts it, “I don’t like paying to process rainwater.”
By far the most accepted technique to locate and quantify I&I is the flow study. The preferred tools for these studies are area-velocity monitors. To acquire data, these monitors measure water depth in a pipe and its velocity to derive flow. While monitor manufacturers employ a range of specific technologies, A/V monitors generally share
