ANALYSIS OF PHYSICAL AND CHEMICAL PARAMETERS OF ROMANIAN BOTTLED DRINKING WATER

C. ROŞU AND  I.M. VARGA

ABSTRACT. – Analysis of physical and chemical parameters of Romanian bottled drinking water.  Twenty-one different brands (31 samples) of bottled drinking water collected from different retail shops in Cluj-Napoca, Romania, were analyzed for different physical and chemical parameters to ascertain their compliability with the prescribed/recommended limits of Romanian drinking water laws, L458/2002 and L311/2004. The bottled drinking waters  were analyzed for pH, Electrical Conductivity (EC), Calcium (Ca²⁺), Magnesium (Mg²⁺), Sodium (Na⁺), Bicarbonate (HCO₃^-), Sulfate (SO₄^2-) and Chloride(Cl^-) using standard techniques in laboratory. Electric conductivity (EC) vary between 92 μS/cm and 3910 μS/cm and  pH  vary between 5.35 and 7.93. The Calcium content ranges from 10 to 326 mg/L, 29% exceed the MCL. The Magnesium content ranges from 2 to 335 mg/L, 19% exceed the MCL. The Sodium content ranges from 1 to 428 mg/L, 16% exceed the MCL The bicarbonate content ranges from 52 to 3111 mg/L. The Sulfate content ranges from 2 to 62 mg/L. The Chloride content ranges from 2 to 308 mg/L, 3% exceed the MCL. Romanian bottled drinking water bicarbonate correlates positively with Ca²⁺ (r²=0.7857), with Mg²⁺ (r²=0.6874) and with Na⁺ (r²=0.6848). Electric conductivity (EC) correlates positively with Ca²⁺ (r²=0.7148), with Mg²⁺ (r²=0.6369), with Na⁺ (r²=0.6625) and with HCO₃^- (r²=09252).        

 Keywords: bottled water, mineral water, cations, water quality, anions.

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