Abstract
The bottled water market in Algeria has experienced significant expansion in recent years, driven by increased demand and the growing number of production units. Although the quality of these waters generally meets health standards, notable variations remain in terms of mineral composition and organoleptic characteristics. To refine the assessment of this quality, this study proposes an innovative methodological approach based on the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) technique. This method allows ranking alternatives based on their proximity to an ideal solution, taking into account criteria such as hardness, nitrate content, mineralization, and the hydro-chemical nature of the waters. The quality of the studied waters varies according to the analyzed parameters, and the importance of the criteria is determined by their impact on the potability and taste of the waters. Hardness is considered essential, followed by mineralization and hydro-chemical nature, while nitrate content is the most crucial criterion due to potential health risks. A detailed ranking of the different brands available on the Algerian market has been established. The results reveal a great diversity of profiles, with no brand systematically standing out from the others.
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