Our sustainable house has a compost toilette. A great decision. It is not smelly at all, and saving a lot of dirt water. For the rest of the dirt water, we need to establish sewage. As you can see on the picture, our earth is really full of clay. To make sure our rain water will seep away, we also get two gabions, one for rain water and one for dirt water, which will be connected to the sewer later on.