ТӨВ АЙМГИЙН БАРУУН БОЛОН ХОЙД СУМДЫН РАШААН, РАШААН ТӨСТ БУЛГИЙН УСНЫ МИКРОБИОЛОГИЙН СУДАЛГАА

In recent years, many of mineral springs have been negatively influenced due to anthropogenic factors and environment conditions such as drowning and polluting, and thus affected the ecological balance. The study was conducted to assess the current level of water pollution by microbiological indicators. According to the “Environment. Protecting health. Security. Drinking water. Hygiene requirements” MNS 0900: 2018 standard, total number of bacteria, heat-resistant intestinal group bacteria, E.coli and Salmonella were assessed in 22 mineral springs and spring-like headspring located in 6 soums of Tuv aimag. In 56% of all mineral springs and spring water points, the total number of bacteria exceeded the drinking water standard, in totally 37.5% of the spring water samples were polluted by E. coli bacteria and 18.7% with heat-resistant intestinal group bacteria.