On May 7, 2019, the Water Supply Plant, Sewerage and Sewage Treatment Company "WOD-KAN” in Mława organized the "Open Day" at the Water Treatment Station, as part of the campaign "pouring water – waffle on” under the auspices of the Mayor of Mława City. Visitors had the opportunity to take a look at the devices and technology used by the "WOD-KAN". During the event, the SYMBIO Biomonitoring System was very popular among visitors, which was presented by representatives of PROTE company: Dariusz Ligocki - the Manager of Water Protection and Research Department and Jan Nowak - Assistant Specialist for Environmental Protection. To see more please find the enclosed photoreport.