The Extalia Company, based in Narbonne (France), is a young innovative startup in the water and environmental sector. Founded by Alexandre Nou, PhD in Hydrogeology, and Séverin Pistre, Professor of Hydrogeology, the company develops and manufactures autonomous measuring probes in order to performs global inspection of underground water pipeline network . Our product, SAM-P, is an easy-to-use, practical and reliable multi-parameter probe. Usable for raw, drinking, waste water and heat water pipelines, the SAM-P probe is autonomous, non-motorized and moves forward thanks to water velocity. Relatively simple to insert and extract from water pipelines, this device allows to do a global water pipeline diagnosis (leakage location, fouling estimation, hydraulic head loss measurement etc...) over a long distance, quickly and without disruption.