D2.4 Leakage and infiltration detection techniques

This report describes the work performed within Bodø Living Lab regarding Task 2.2 “Water-smart solutions for Bodø”. More specifically, subtask 2.2.1 involves monitoring and communication technologies, algorithms and approaches for leakage and infiltration/inflow quantification, detection and localization. It introduces the state-of-the-art for smart water meters, leakage quantification, detection and localization in water distribution networks and infiltration and inflow quantification and detection in sewer networks and how it was applied and extended during this project. The application of self-powered smart water meters allows for the acquisition, storage and communication of flow, pressure, temperature data with high temporal resolution of up to 1 minute. In conjunction with the existing district meters of the municipality, this data was the basis for both the application of existing methods for leakage quantification and the development of new data-driven algorithms for leak detection. To test those approaches an artificial leak scenario was designed and carried out in the field, providing openly available test data. For infiltration and inflow estimation, several methods were explored and evaluated for applicability resulting in the application of a method based on a sewer flow measurement campaign. Furthermore, a proof of concept for the possibility of modelling the interdependency between leakage out of the water distribution system and infiltration into the sewer was developed. Two dashboards are described, one providing homeowners with a detailed view of the consumption in the household, while the second is designed for application by the municipality.