When we think of pressure distribution, the first thing that comes to mind is the use of a series of pressurized laterals to distribute effluent over a rock bed and into the clean sand layer to distribute over the original soil surface. Use of these pressure distribution networks in mounds has been continuous since the early 1970s.Today there are many more applications of pressure distribution networks – constructed directly in the soil in shallow drainfields, in the use of drip irrigation methods and in various media filters to provide pretreatment. Initially there was a lot of resistance to the use
