… wastewater treatment. What is the difference between relevant micropollutants and indicator substances of advanced wastewater? Relevant micropollutants must be distinguished from indicator substances of advanced wastewater treatment. Such indicator substances are … mentioned in the draft of the European Urban Wastewater Treatment Directive. They indicate the functionality of wastewater treatment processes. It is clear that not …

… which measurement data is available in the current calendar year, and the legend indicates how good the air quality was there most recently. If not all five pollutants are measured at a station, this is indicated by a circle with one corner missing. Under Select station you can zoom in … all stations providing data in the current calendar year at a glance. The legend indicates the range of measured concentrations for the selected air pollutant and …

… the German Environment Agency and the staff working on the pages. Unless otherwise indicated, objects, graphics, sound documents, video sequences and texts created by … the German Environment Agency and the staff working on the pages. Unless otherwise indicated, objects, graphics, sound documents, video sequences and texts created by …

… Jonas Stoll Feliks Todtmann E-Mail: internetredaktion@uba.de Photo credits (if not indicated below the picture) The UBA The UBA: Silvia Sinah Topics Climate | Energy: … Jonas Stoll Feliks Todtmann E-Mail: internetredaktion@uba.de Photo credits (if not indicated below the picture) The UBA The UBA: Silvia Sinah Topics Climate | Energy: …