**1. Introduction**

The problem of water supply affects millions of people worldwide and more than one hundred million people in Europe. Approximately 80% of fresh water in Europe (for drinking and other needs) originates from underground water and rivers, which is why these sources are particularly threatened by climate change, pollution, and overexploitation of water resources [1]. According to the report on water resources in the world, which was issued by United Nations Educational, Scientific and Cultural Organization, UNESCO (Paris, France) in 2003, among 188 countries, Croatia ranked highly, 5th in Europe and 42nd in the world. Croatia is one of the few countries that mostly provides healthy water through the public water supply system, to which 80% of the population is connected. The data show that in the last ten years, less than 10% of the tested samples were unhealthy in Croatia [2]. Water for human consumption must meet the parameters of conformity for water for human consumption as prescribed by the "Regulation on parameters of conformity, methods of analysis, monitoring and safety plans of water for human consumption and the way of keeping a register of legal entities that perform the activity of public water supply". Healthy water for human consumption is water that does not contain microorganisms, parasites and their developmental forms in numbers that represent a potential danger to human health; water that does not contain harmful substances in concentrations that themselves or together with other substances represent a potential danger to human health and water in which the health parameters do not exceed the values prescribed by the ordinance (Official Gazette 125/17) [2]. Water sampling was conducted in the city of Virovitica and surrounding settlements (Podgorje, Ðurad, Lozan and Špiši´ ¯ c Bukovica) at different locations over a period of 2 days. The aim of this work was to examine the drinking water quality of the Virovitica water supply system, that is, to determine certain indicators of water quality and to determine whether they meet the standards prescribed by law.

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**Citation:** Ptiˇcek Siroˇci´c, A.; Ojdani´c, K.; Doganˇci´c, D.; Plantak, L. Water Quality for Human Consumption from the Public Water Supply System. *Environ. Sci. Proc.* **2023**, *25*, 21. https://doi.org/10.3390/ ECWS-7-14230

Academic Editor: Lampros Vasiliades

Published: 16 March 2023

**Copyright:** © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).

### **2. Materials and Methods**
