The problem of drinking water quality is critical public health concern in Ethiopia which poor sanitation and the use contaminated are blamed for 80% disease cases. This very important monitoring supply to identify address any potential contaminants as well investment infrastructures treatment technology that can improve quality. review aimed evaluate based on concentration status physicochemic...

milk is often described as a complete food because it contains protein, sugar, fat, vitamins, and minerals. this study was performed to investigate risk factors affecting chemical and bacteriological quality of bulk tank milk. according to the following conducted experiments, the milk was divided into two standard and non-standard groups. then, effect of risk factors on making the samples non-s...