Microbiological ąuality of cows milk obtained directly from farmers was investigated. The following parameters were considered: total bacteria count, coli titre, acidophilic bacteria count, yeast and mould count, pathogens presence, resaurine test, titration acidity, pH, milk temperature. It was found that in 68% of investigated samples the total bacteria count ranged between 95·104 and 6,1·106/cm3 and coli titre 0,01 and 0.0001. Total amount of moulds and yeasts ranged from 36·104 to 4,4·106cm3. Typical pathogens affecting mastitis (Staphylococcus aureus, Streptococcus agalactie, Streptococcus uberis) were found in 16 investigated samples only. The high level of microbiological contamination of milk affected unsatisfactory results of fermentation test.