Environmental monitoring of groundwater from the "Centralna" coal mine in eastern Ukraine

As a result of the military actions, the population of the Pokrovsky district was left without a centralized supply of drinking water. An alternative water supply method currently being implemented involved the use of groundwater from the "Centralna" mine in the city of Myrnohrad. Groundwater was purified from suspended matter and disinfected from bacteria using sodium hypochlorite. The technology did not include purification of groundwater from chemicals. The purpose of this study is to monitor the quality of groundwater from the "Centralna" mine in the city of Myrnohrad. The investigations of groundwater samples before and after purification were carried out in the "Laboratory of Chemical and Veterinary Investigation Office" (CVUA) Stuttgart, Germany. The studies were conducted on 130 parameters in accordance with European water quality standards. It was established that the following standard parameters were exceeded: sodium, chlorides, sulphates, and hardness salts. At the same time, an excess of water colourability was detected. The excess of standards for these parameters ranged from 7 to 312%. Chemicals such as Acesulfame-K (E950), Cyclamate (E952) and Trifluoroacetic Acid have been found in mine water. This water can be used very limitedly as technical water in emergency conditions of military operations.