Water from underground intakes is the main source of potable water for people in Poland, hence the protection of its resources is of great importance for the functioning of society and the economy. A new regulation in Polish Water Law imposes the obligation of performing risk analysis for water intakes, including the assessment of health hazards, factors negatively affecting water quality which are identified on the basis of hydrogeological and geological analyses. The main objective of the study was to determine the health risk for chlorides and to present an innovative approach to the health risk for non-toxic substances. In Upper Silesia, which is the most industrialized and urbanized area in Poland, old mining shafts are often used as deep wells in the water supply chain, and higher mineralization is the key feature of abstracted water which does not quite eliminate them as a source of drinking water supply. This paper proposes a new method of health risk determination as hazard index (HI). We present analysis of the health risks with increased concentration of chlorides in water which cause health effects for water consumers, especially for men, children aged 4–8, pregnant women and women during lactation.

地下取水源是波兰人民饮用水的主要来源，因此，保护​​其资源对于社会和经济的运转至关重要。波兰《水法》中的一项新法规规定，有义务对取水口进行风险分析，包括对健康危害的评估，对水质产生不利影响的因素，这些因素是在水文地质和地质分析的基础上确定的。该研究的主要目的是确定氯化物的健康风险，并提出一种创新的方法来解决无毒物质的健康风险。在波兰最工业化和城市化的上西里西亚省，老矿井通常被用作供水链中的深井，高矿化度是取水的主要特征，并不能完全消除它们作为饮用水的来源。本文提出了一种新的健康风险确定方法-危害指数（HI）。我们对水中氯化物浓度增加对健康的风险进行了分析，这些氯化物对水的消耗者，特别是男性，4-8岁的儿童，孕妇和哺乳期的妇女造成健康影响。