Around 10 billion cubic metres of wastewater are treated annually. Of this, almost 100% is treated biologically. On the one hand, wastewater is an important source of raw materials; on the other hand, it can have a considerable impact on the environment. For many years, certified PE piping systems from Gerodur have made a significant contribution to ensuring that wastewater networks function reliably for at least 100 years. We offer pipe systems for pressure drainage as well as for gravity lines, for new installations as well as for rehabilitation. We follow the philosophy of the fully welded pipe system.