Auckland septic tank fabrication, custom septic tanks.Single chamber septic tank, fabricated from 12mm HMWPE, extrusion welded and pressure tested. Custom septic tanks, septic treatment tanks, waste water filtration tanks, auckland fabricated septic tanks with delivery nation wide. North Island septic tanks, south Island Septic tanks custom built to order, light weight, easy to install and eco friendly.Local West Auckland septic tank custom fabrication.