Evaluating the quality and nutritional content of bottled waters in Algeria

Abstract

The present study offers a quality assessment of the mineral and spring waters marketed in Algeria within the national and international legislations, examine the potential contribution of bottled waters to essential elements intake and effects on public health based on empirical, graphical tools, multivariate statistical techniques and (DRI) system. The study covered a dataset of 30 mineral and 33 spring brands. The parameters included, from bottle labels, were of physicochemical nature. All brands comply with national and WHO norms for the bottled waters, except for (Brand#63) in which NO2− exceeded the maximum permissible limit for mineral water and (Brands#4 and #21) where TH and TDS exceeded the Algerian recommended guidelines for spring water. Nearly 5% of the total brands were of bicarbonate nature belonging to mineral water, while 25% of all brands were suitable for low-sodium-diet. PCA and HCA showed that bottled waters could be classified into two distinct groups, according to degree of mineralization. The DRI-system revealed that Algerian bottled waters contributed substantially to the daily intake for Mg2+ with up to (63%), Na+ (40.36%) and Ca2+ (36%) for spring water for different ages and genders, whereas mineral water exceeded the maximum recommended daily intake for Ca2+ (128%) and Na+ (148.36%) for adults. HIGHLIGHTS An updated survey of the bottled water production units and consumption in Algeria was carried out.; A spatial distribution of the bottled water production units nationwide was studied.; Particularly, a quality assessment of the bottled mineral and spring waters marketed in Algeria was analyzed.; For the first time, an estimate of the bottled waters minerals contribution to dietary intake based on the DRI system was done.; Their effects on public health were studied.;

Keywords

• algeria
• bottled water
• dietary reference intake
• hydrochemistry
• water quality