Drinking water safety is crucial to public health safety and One-health program being advocated by the world health Organization (WHO) as a means of securing upgrade in the quality of life. A total of twelve retailed branded bottled and sachet water samples were randomly purchased for microbiological analysis from three metropolitan Universities. The physic-chemical properties of these samples were determined prior to microbiological analysis. Standard and conventional methods were followed using the membrane filter technique (diameter 0.45µm) for the isolation of microbial contaminants. Microbial isolates were cultured on nutrient agar (NA), Sabouraud dextrose agar (SDA) and Thiosulphate citrate bile salt sucrose agar (TCBS)