Surveillance monitoring has been carried out in Nestos/Mesta water bodies and now the two countries are ready to start operational monitoring through the establishment of a network of monitoring stations (article 8 WFD) in the river basin’s water bodies. Part of this monitoring could be carried out through telemetry, where monitoring data are continuous, real time, low cost, more reliable, and also compatible providing that common methodologies have been established. Lack of telemetric water quality data as a subset of operational monitoring of article 8, will lead in weakness to harmonize data later on and to fulfil both WFD demands and civil protection in the Nestos/Mesta river basin.This project addresses a great challenge for both countries to establish an operational and sustainable telemetric monitoring mechanism for both water directorates of the river basin, consisting of: 1) networks of compatible and inter-calibrated sensors able to transmit reliable and compatible water quality data in order to support operational monitoring of different water bodies in the two countries, 2) a set of common software tools and expert systems related to water quality data processing and pollution early warning and 3) supportive structures (cross-border supportive infrastructures) for ensuring the functioning of the networks. Expected Results: a) Civil protection against water pollutionb) Infrastructural improvement and increased capacity of competent authorities in themonitoring and management of water resourcesc) Improved water management policies including planning and evaluation of effectivenessusing the telemetric datad) Comparable, continuous and reliable water quality datasetse) Public awareness and increased citizens’ sense of security and safety