Question:Why is pressure distribution so necessary in sewage treatment mounds? In some cases the septic tank could flow by gravity to the mound, but we have to install a pump according to state code. I don’t think it’s right that we have to increase the price of the sewage system just because of a code provision. Answer:The reason for requiring pressure distribution in a mound is to get an even distribution of sewage tank effluent over the rock layer. The effluent then trickles down through the rock to the clean sand layer for final treatment. There are three perforated laterals
