RESUMO
The analysis of literature and water data on the presence of microbiological safety indicators of micromycetes was conducted, that are able to exist and reproduce in tap water entering the consumer. Microscopic fungi (Penicillium, Rhodotorula, Fusarium, Cladosporium, Aspergillus) in the amount of 10 to 303,3 CFU/dm3 were detected in the samples of tap drinking water studied. At the same time, tap water in 50.0% of cases is contaminated with pathogenic micromycetes, the structure of which is represented by: Penicillium spp. (40.0%), Aspergillus (28.75%), Rhodotorula spp. (17.5%), Fusarium (10.0%), Cladosporium spp. (3.75%). In terms of quantitative traits, micromycetes of the genus Rhodotorula dominated in drinking water - 150.0±23.3 CFU/dm3, Penicillium, on average, was detected in the amount of 87.0±7.7 CFU/m3, Fusarium - 60.0±6.4 CFU/dm3, Aspergillus - 22.0±4.9 CFU/dm3, and Cladosporium - 10.0±3.3 CFU/dm3. The presence of micromycetes in water was monitored depending on the season of the year. A direct strong correlation was established between the average monthly air temperature and the total frequency of detection in drinking tap water of all types of micromycetes. The results indicate that the water samples do not meet the requirements of DSTU 4808-2007 for the presence of micromycetes. At the same time, according to the requirements of DSanPiN 2.2.4-171-10 and Council Directive 98/83/EC, microscopic fungi are not regulated at all in tap water. Therefore, we propose to revise the standards, namely, to include micromycetes in the indicators of microbiological safety, which will make it possible to improve water quality control.
