Collection of the faeces in huge underground tanks, which tend to leak after a long period of time. When the content of the tank percolates into the ground water, the surrounding wells are contaminated.

What we try to do better

In order to achieve a successful fertilization of the solid faeces, it is necessary to separate the fluid faeces. Therefore saw dust will be used after every toilet use to avoid smell development and remove moisture. For our selfmade toilet we use a separation inlet for fluid and solid faeces. In case of heavy rain events it is important that the chambers are located above ground level.


  • Additional 2 m² foundation
  • Door with wood coating
  • Aeration pipe
  • Wooden toilet construction
  • Urine percolation

When taking a closer look at the nearby concept, the ground base covers two chambers. When one chamber is filled to the top, the toilet seat will be replaced over the other chamber. After approximately 2-3 months the faeces are completely transformed into fertilized soil.

This soil can be extracted on the backside and is intended to be used as fertilizer for the own garden.

Rainwater harvesting

The rainwater is transported with gutters on both sides of the roof and will be collected in a 200 l tank. The tank will be placed on a steel construction and close to the bottom of the tank a water tap will be mounted.

The tank water will be used to clean the hands after the toilet use.

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