This Fishbone map outlines the risk factors affecting water treatment identified by EBNS THIES, categorized into environment, methods, materials, and workforce management. It highlights issues like non-compliant sampling points, contamination sources, and aged infrastructure. Methodological concerns include inadequate treatment protocols and insufficient safety measures. Problems with materials involve non-conforming treatment products and sampling containers, while management issues point to insufficient training and human errors. EdrawMax enables the clear visualization of such complex analysis, aiding in identifying, categorizing, and addressing each risk factor effectively for improved safety and compliance in water treatment processes.