Water-borne viral diseases pose high risks for public health worldwide. The urban wastewater contains large number of pathogen viruses, and even the most advanced wastewater treatment is not safe for full removal of virus particles.The conventional biological water quality indicators do not provide adequate information about the presence of pathogenic viruses. The currently available reliable virus test - based on molecular biology - is expensive, time consuming and labour intensive, thus limited to few laboratories with sophisticated facilities and well-trained personnel, even though the protection of water networks against pathogenic viruses is crucial.In this project we aim to develop a novel, cost effective, portable, on-site detection system, which is capable for monitoring human enteric viruses in different freshwater bodies.The method is based on disposable microfluidic chip, in which the virus particles can be up-concentrated and detected by electrical readout with a detection limit of 0.01-1 virus/L. We will focus on selective detection of norovirus, Hepatitis A and rotavirus (the most prevalent viruses), but the sensor is capable to detect any other virus with relevant functionalization.The “plug-and-play” virus sensor chip will be integrated into a measurement unit, which will send the data to the monitoring station.The project will include laboratory and field tests and validation of the monitoring unit, development an early warning system and epidemic risk assessment, provide with exploitation possibilities at the end-users, economical assessment for positive production capacity and preparation for future standardization.