Evaluation of the quality of waters formed in the river Cheremiskhevi bed for the purposes of drinking and domestic water supply.
2021
Population growth, industrial and agricultural development have led to a systematic increase in water demand. Although Georgia is rich in natural water resources with high quality drinking water, the issue of clean drinking water supply to the population in many regions of the country, especially in its semi-arid and humid zones, is quite acute. The article refers to use of water formed in the Cheremiskhevi riverbed for water supplying the villages of Gurjaani municipality (Velistsikhe, Zegaani, Mukuzani) located on the north-eastern slope of the Tsiv-Gombori ridge. In 2013-2020, chemical and sanitary-microbiological characteristics of Cheremiskhevi surface (river) runoff and alluvial-proluvial sediments of the river were studied under field and stationary conditions. The analysis revealed that the water belongs to the hydrocarbonate-calcium type and the total mineralization does not exceed 0.5 g/l. According to the dynamics of the seasonal change of the main ions, all the studied values vary within the maximum allowable concentration. The results of the analysis revealed that the water is polluted by man-made activity and does not comply with the sanitary norms established by the technical regulations of drinking water. Tab. 4, Fig. 1, Ref. 9.
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