MX (3-Chloro-4-(Dichloromethyl)-5-Hydroxy-2(5H)-Furanone) and NDMA (N,N-dimethyl-Nnitrosoamine) are disinfection by-products, which are formed during NOM's and other water containing precursors reaction with chlorine. Both, due to their potential carcinogenic and mutagenic properties were placed on the list of potentially health hazardous disinfection byproducts. Both of the compounds occur in drinking water at the ppt level. An extensive review of international literature was the background of the presentation of state of the art concerns on MX and NDMA analysis.