tLeachates produced in intensive horticulture must be collected, reused and eventually treated in order toprevent environmental pollution of water bodies. Constructed wetlands (CW) try to emulate natural wet-lands, where pollutants such as nitrates are removed through the denitrification process. CW are a simpleand sustainable technique with a low energy demand that are being used to purify different effluents. Noinformation is currently available on tools used to monitor the performance of such systems in terms ofnutrient removal efficiency. Nor is information available on the use of Information and CommunicationTechnologies (ICT) tools to share news on this performance across the Internet. The purposes of the studywere: a) to demonstrate the feasibility of using online instruments to measure leachate ions in order tomonitor CW performance and to manage it properly and b) to share this real-time data monitoring withthe end users through a web App. Under the described experimental conditions, the on-line analyzersare reliable instruments to measure nitrates, nitrite, phosphates and potassium ion. Monitoring of theconstructed wetlands through the web is an effective tool that would contribute to show the feasibilityof the system to the end users. These two conclusions demonstrated the innovativeness of the wholesystem to monitor the constructed wetlands through the Internet.