Article 15 of the Federal Waste Ordinance (ADWO) stipulates that phosphorus must be recovered from phosphorus-rich waste from 2016 onwards (with a 10-year transition period). Sewage sludge, as well as meat and bone meal, are considered phosphorus-rich waste. Responsibility must be taken for implementing the various regulations. In this case, the cantons are responsible and need help with enforcement.

The Federal Office for the Environment (FOEN) therefore developed an enforcement aid, which TBF worked on and supported.