The Hydrogeology Working Group hosted four school students studying from 9^th to 11^th grade for a 3-day training program as part of their internship organized in cooperation with the MINToring Program at FUB. The students learnt groundwater monitoring techniques, groundwater sampling methods, and water quality analysis in the field/ laboratory. They also had the opportunity to hear lectures on the geology and hydrogeology of Berlin, including the drinking water supply scenario and management of the resource. One-day visit to the Isotope Hydrology lab and Geophysics lab at BGR, Spandau was also arranged.