People, animals and plants cannot live without phosphorus. Baden-Württemberg is almost completely dependent on phosphorus imports from other countries and would like to change this. In 2012, a phosphorus recovery strategy was developed for Baden-Württemberg with the recommendation to use sewage sludge as a secondary source of phosphorus. With the ERDF funding program "Phosphorus Recovery", the Ministry of the Environment supports three plants for phosphorus recovery from sewage sludge.