Quality of the groundwater aquifers in alluvial deposits and quaternary aquifer complex in eocene-pliocene in Kharkiv region

Abstract

The article analyzes the quality of drinking groundwater aquifer alluvial sediments and Quaternary aquifer complex of Eocene-Pliocene intakes in Kharkiv region. Data of the previous studies on the assessment of drinking groundwater quality have been analysed. The comparison was made between values of groundwater aquifer’s chemical composition in alluvial sediments and Quaternary aquifer complex of Eocene-Pliocene period of intake according to standards DerzhSanPiN 383-97 "Drinking Water". This made it possible to assess macro- and micro-components in existing groundwater withdrawals.  Chemical composition of drinking groundwater was considered within the main fields of Kharkiv region from the approved reserves of groundwater intakes exploiting these underground water aquifers. The average forecasted supply of groundwater resources per capita in Kharkiv region is about 1.29 m³ / day, corresponding to 6 place in Ukraine, operating reserves - 0.33 m³ / day, corresponding to 10th place among the regions of Ukraine. Groundwater was explored in 28 fields with 50 intakes. There are total for Ukraine 435 989 deposits withdrawals. In absolute figures Kharkiv region belongs to the areas with the most proven operating reserves of groundwater. The number of approved operational reserves was 1047.87 thousand m³ / day. Groundwater reserves were approved only in 15 districts of 27. In total, there are more than 3.1 thousand wells in the area.Withdrawals from the alluvial aquifer of Quaternary sediments is 0,062 thousand m³ / day, corresponding to 0.7% of total water intake value. Withdrawals bearing complex of Eocene-Pliocene is 0.975 thousand m³ / day, corresponding to 4.0% of forecast resources value on the horizon and 11.3% of total water intake.