Researchers from Aconsa SL (Barcelona), Universitat de Barcelona and members of the GenIUL R&D team, used PhAST Blue device and GenIUL reagents to show the potential of v-qPCR as a quick tool for managing the prevention and control of Legionellosis in water systems. Moreover, the combined interpretation of PCR results along with the ratio of live cells is proposed as a tool for understanding the sample context and estimating the Legionellosis risk potential according to 4 levels of hierarchy.