This data was generated within the European NAIADES project (grant agreement No 820985) for the development of the Dynamical Treatments Suggestion (DTS) Service. The DTS purpose is the estimation of the most efficient treatments (dosage of coagulant and chlorine) for drinking Water Treatment Plants (dWTPs) whose configuration is: coagulation/sedimentation, filtration and chlorination. The inlet water quality (pH, conductivity and turbidity) of the dWTP is used as input of the service. Then, it suggests the most efficient treatments that guarantee good drinking water quality at the outlet of the dWTP, based on WHO recommendations (turbidity below 5 NTU and chlorine concentration between 0.5 and 1 mg/L). The dataset includes data generated with Stimela, an open source water treatments processes simulation SW; and data collected in a scaled down replica of a real dWTP.