The installation of the septic tank involved the digging of a very large hole, in which was placed a large concrete tank. To prevent it floating away this then had to be filled with water (at a cost of 80 euros).
From the tank, a drain is dug leading to a pit 20 metres square. This will become our filter bed, consisting of layers of sand, gravel and sand to filter and clean the water from the tank. The run off from this, which should be clean, then has to be directed to a drain or ditch of some sort. The tank itself needs to be vented away from any buildings to avoid that nasty dead cabbage smell permeating the air!
After Warren has fitted all of this and got it working we have to get it approved and certified by something called the 'SPANC' or something that sounded very like that! All in all it is a big project and something we hope will be finished when we return in October.