Book updated Apr 2024. In Kansas it is the KDHE that administers the water operator certification program. There are several classes of certification. The questions provided in this product focus on the Water Treatment Processes of Rapid Mixing, Coagulation and Flocculation, Water Fluoridation, Sedimentation, Filtration, and Disinfection. These are the knowledge compatible with all exam classes. State water operator licensing exams are designed...