Taiwan is a small island, which is highly populated. There are many complaints and petitions due to the discharge of untreated wastewater from the factories and industrial area. Up to present, there are disadvantages that are high installation cost and high spatial occupation of the common used water quality monitor instruments. Hence, these are not suitable for widespread installation. Recently, based on the improvement of the technology on on-line water sampling and quality analysis, as well as the big data and wireless transmission technology, developing a durable, small volume-occupied, easy-operation and low cost water quality monitor IOT interactive information system becomes a possible route. In this study, we have accomplished the goals as followings, 1) collecting and researching domestic and foreign commercial products or published literatures with regarding to water quality monitor sensing system and making suggestions on the development of widespread water quality monitor sensing system; 2) successfully developing screen printed carbon electrode coupled with anodic stripping voltammetry to detect Pb ions; 3) developing multi-functional ITO thin film sensing system with pH, temperature and electro-conductivity and also providing 3 prototype to implement small field test; 4) completing IOT scenario analysis report including modules such as 「Early Warning module」and 「Source Tracking module」.

water quality monitoring, Microfluidic chip, Internet of things