http://walthamstow.london/News/cleansing-fast-in-5-steps/ A septic drainfield consists distribution pipes that filled up with holes that permit the liquid to gradually seep out into types of around the pipe. Spot around the pipe contains gravel trenches that give the liquid waste to flow into the ground. It is critical that the trenches are placed at least a foot above the groundwater table prevent dirty water from entering drinking water supply. Mon, 14 Nov 2016 19:24:24 UTC en