부산대학교 도서관

Microbiological quality of surface water is mainly determined by monitoring the presence of pathogenic microorganisms based on the indicator's identification of fecal contamination. On the other hand, the definition of the different types of pathogenic microorganisms in rivers and lakes is difficult, time-consuming and more expenditure.For this reason, the study and evaluation of microbiological water quality are conducted by determining the microbial indicators, which provide information about the possibility of fecal contamination of these waters. The test of determining microbial indicators, such as fecal coliforms is fast and low cost, compared with a test for microorganisms and specific pathogens. These microbial indicators of fecal contamination, which are used as an indicator of hygienic water quality must meet certain criteria.In the first place, they should always be present and in large numbers in fecal material of humans or warm-blooded animals, and should be easily detected by simple methods and should not reproduce in natural waters.Also, a special importance has the fact that the presence, cleaning or their removal in water treatment processes should be similar to that of pathogenic microorganisms. [ABSTRACT FROM AUTHOR]