As to evaluate the quality of water the following parameters are usually monitored :
EC, Total Dissolved Solids, Total Suspended Solids, pH, Total Hard ness, SiO2, NO3, F, Na, K, Ca, Mg, Cl, SO4, HCO3 and trace elements . Water must be free from biological contamination. However the data must be within the permissible limits recommended , of required water for specific use in Industrial purposes.
I do not know much about the pharmaceutical industry but I do know about the parameters of paramount importance when it comes to drinking water quality. They include but are not limited to TSS, TDS, Turbidity, DO, Total Coliforms, Faecal Coliforms, Nutrient levels, Hardness, pH, temperature and conductivity