THE PRESENCE OF Escherichia coli and Enterococcus IN THE WATER OF THE FIFTH CANAL AND BLACK RIVER NEAR BITOLA

Abstract

Water is a natural resource necessary for all living organisms. In our research, the research material is water.As measuring points for sampling analysis are: measuring point 1 (Crna Reka near the village of Novaci), measuring point 2 (fifth channel exit of Bitola), measuring point 3 (fifth channel near the village of Kravari) measuring point 4 (fifth channel before flowing into the Crna Reka), measuring point 5 (Crna Reka before being mixed with water from the fifth channel), measuring point 6 (Crna Reka after mixing with water from the fifth channel) and measuring point 7 (Crna Reka near the village of Skocivir). In order to determine the quality of the  water from sanitary-hygienic aspect,  the following microbiological tests have been made: determining the number of Escherichia coli, with a membrane filtration method made according to the ISO 9308-1:2000 standard for water quality and determination of the number of Enterococcus with membrane filtration according to the ISO 7899-2:2000 standard.

The number of types of microorganisms tested indicates an increase in the number of microorganisms in the channel (measuring point 2, 3 and 4) which, at the measuring point 6 (junction of Crna Reka with the channel), are transmitted in Crna Reka. And with that, not only the Crna Reka is getting polluted, but also the entire environment.

All this indicates that the cleaning of the canal and the watercourse should become an obligation before the competent institutions but also the obligation of each individual is to protect his environment.