Sand filter systems may be constructed previously mentioned or down below ground. Effluent flows through the septic tank to some pump chamber. It can be then pumped for the sand filter. The sand filter is commonly PVC-lined or possibly a concrete box crammed with a sand content. Though mound systems https://www.prlog.org/12986538-mastering-septic-tank-cleaning-expert-tips-for-healthy-home-and-environment.html