Wastewater Discharge Permit

Businesses that discharge wastewater into rivers, lakes, or groundwater (Direkteinleiter) or into the public sewer system with elevated pollutant levels (Indirekteinleiter) need a wastewater discharge permit (Einleitungsgenehmigung) under the Federal Water Resources Act (WHG). This applies to manufacturing, food processing, chemical plants, metalworking, and other industries whose wastewater exceeds normal domestic standards.

Direct dischargers apply for a water law permit at the state water authority. Indirect dischargers apply at the lower water authority of the district or municipality. The application must describe the type and quantity of wastewater, pollutant concentrations, and treatment measures. Discharge limits are set according to the Wastewater Ordinance (AbwV) and must meet the current state of technology. Permits are typically time-limited and may include monitoring and reporting obligations.