The quality of water of sources decentralized water supply systems Inaldansky, Hangalassky and Megino-Kangalassky districts of Yakutia
The article the results of research during 2006-2013 years of condition water sources decentralized water supply systems are presents (wells, water springs) in the three districts of Yakutia: Aldansky, Hangalassky and Megino- Kangalassky. The statistical registration forms of Hygiene and Epidemiology Center in the Republic of Sakha (Yakutia) used for analysis.8354 water samples were analyzed. The least amount (p<0,05) of non-standard water samples of sources of decentralized water supply have been reported in Aldan region (about 18%). Every third water sample did not correspond hygienic standards in Khangalassky district. The number non-standard for microbiological parameters of water samples was significantly higher than the same indicator for Yakutia. The water samples that do not correspond sanitary and chemical standards, the most frequently (p <0,05) have met in Megino-Kangalassky district (51,2±3,9%). The dynamics of reducing the percentage of unsatisfactory samples of water of sources in the decentralized water supply in Khangalassky district was revealed. This reflects the situation in the Republic of Sakha (Yakutia). Meaningful dynamics of changes of the share of non- standard water samples during the study period is not revealed in the Aldan and Megino-Kangalassky district.