PERTA, together with its partner S::CAN, were chosen by LNEC to supply on-line monitoring equipment for several water quality parameters. The European PREPARED project, which also involves Simtejo and EPAL, is one of the largest in this area currently under execution, with the joint collaboration of 35 partners. The system allows you to combine in a single terminal more than 24 parameters simultaneously! The continuous monitoring is currently focused on the set of parameters COD + BOD + TSS + NO3 + NH4 + O2 + pH + Conductivity.