Recently we completed an upgrade on an old septic tank system. Sometimes using the bio friendly waste water treatment system you can keep your old septic tank once it’s water tight which will save you money as you will than only need one tank (treatment tank). In this case the figure 8 tank was deemed not suitable so a full system was installed. We also installed a stratified sand polishing filter, this system of Percolation replaces soil based Percolation areas and is one of the cleanest systems on the market. All works were carried out by us from start to finish and certified by F J Coyle and associates civil and environmental consultants