Contactless Water Quality Monitoring for Sewers

Abstract

We demonstrate a contactless water quality monitoring system tailored for wastewater. The combination of multispectral imaging and machine learning at the edge allows us to measure the turbidity and the chemical oxygen demand with a cost-effective and almost maintenance-free solution. The dedicated illumination was specifically tailored to this application, and multiple machine learning models were tested to optimize and predict the water quality, giving results beyond state-of-the-art.