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Physicochemical characterization of Varna mineral water was made, allowing classifying the type of water based on its macro and microelement composition. A comparative analysis of 23 physicochemical parameters of three water sources placed on the territory of Varna has been carried out. These included color, smell, temperature, turbidity, active reaction, content of ammonium ions, ammonia, nitrites, nitrates, electrical conductivity, total hardness, calcium, magnesium, sulfates, phosphates, chloride, total iron an...