Sewergems - Can Pollutanst be determined in a gravity and pressures sewer Systems?


Is it possible tho determine the pollutant levels in sewergems  using a sewer system that has a mixture of gravity and pressure mains?  I'm trying to determine how long it takes for flow  to travel  through a sewer system to the outfall and my initial thoughts was to use the pollutant/pollutographs


Craig Hill