Changes of water quality can be affected by level of bacterial contamination in the water. one of bacteria that used as indicators of hygiene sanitary is escherichia coli. the purpose of this study was to measure the value of MPN of E. coli in the water used by food vendors around campus of veterinary medicine Faculty of Airlangga University. Ten water samples taken from ten food vendors. Most probable Number Method was used to determined the level E. Coli in contaminated water. the result of the study showed 8 samples contaminated with E. Coli with MPN Number ranges between 0 - 278 MPN/ml. This highest MPN value was sample A10 with value of 278 MPN/ml, while two sample s (A6 and A7) was 0 MPN/ml.
keyword : Water, Escherichia Coli, MPN, Food, Food Vendor
