This article presents the RAMICA owen. The whole RAMICA sensor is able to implement a complete culture of bacteria inside a buoy. It does a culture every day, for 3 months, and sends data in real time. This allows to monitor the evolution of bacteriological contamination and relate it with what it is happening in human doing. RAMICA sensor is a certified laboratory. It implements the MPN (Most Probable Number) Standard Method using 51 separated cells. In each cell it uses different light illumination (white or ultra violet) and its oven can work at different temperatures. With the right combination of lightning and temperature, it can culture Total coliform, Enterococcus and Ecoli.