Muriwai Vermiculture Tank. One of our custom built Treatment Tanks for a local client with a property on Muriwai Beach. The client wanted a cost effective solution to a standard septic tank, with the opportunity to reuse the final highly treated water for plant irrigation. Wormfarms are becoming a highly effecient way to treat the waste solids plus aeration, clarification and sludge return further treating the liquid to a reusable product. Fabricated from 12mm HMWPE, extrusion welded and tested. Work carried out by Wai Water our authorised local West Auckland distributor, installer and maintenance contractor. Clean green and eco friendly.