Milk and its products can harbor a variety of microorganisms and can be important sources of food borne
pathogens. The presence of food borne pathogens in milk is due to direct contact with contaminated sources
in the dairy farm environment and to excretion from the udder of an infected animal. The foodborne
pathogens can reach humans by direct contact, ingestion of raw contaminated milk or cheese, or
contamination during the processing of milk products. Isolation of bacterial pathogens with similar biotypes
from dairy farms and from outbreaks of human disease substantiates this hypothesis. This study was
conducted to determine the incidence of some pathogenic micro organisms in bulk tank milk from 3 dairy
farms in Gharbia governorate, Egypt. Staphylococcus aureas, Streptococcus agalactiae and Escherichia
coli were detected with percentages of 37.5, 6.25 and 12.5% in examined bulk milk samples collected from
farm I, 25, 12.5 and 25% from farm II and 12.5, zero, and 12.5% from farm III., respectively. The presence
of these pathogenic microorganisms in bulk tank milk contribute a potential risk to public health, these
findings underscore the need to control them and to limit bacterial multiplication in bulk tank milk