The project addresses the problem Europe is facing due to the high concentration of nitrogen (>50mg/l) in more than 18% of its groundwater, which poses a risk to both public health and biodiversity. In this way, the project acts on the techniques used for the separation of nitrates in water treatment and potabilisation plants, which generate waste water with a high concentration of nitrates that ends up being discharged into the sewage system and subsequently treated in wastewater treatment plants. As a solution to this problem, the project proposes the application of electrochemical denitrification as a technique for treating water with a high nitrogen load.