TESTATA Quality Comparision

Quality comparison between water distributed by the Hera Group and bottled mineral water

GroupSustainabilityThematic reportsIn good watersUsing tap water has economic and environmental advantagesQuality comparison between water distributed by the Hera Group and bottled mineral water

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Quality Comparision

QUALITY COMPARISON BETWEEN WATER DISTRIBUTED BY THE HERA GROUP AND BOTTLED MINERAL WATER

  MINERAL WATER (CONCENTRATIONS STATED ON BOTTLE LABELS: MIN-MAX) HERA AND USL ANALYSIS (RELEVANT AVERAGE LEVELS IN 2018 IN THE 9 PROVINCES SERVED: MIN-MAX)
Alkalinity of bicarbonates (mg/l) 10 - 1,010 194 - 298
Calcium (mg/l) 3 - 323 50 - 105
Chloride (mg/l) 0 - 80 7 - 89
Hydrogen ion concentration (pH) 6.5 - 8.1 7.5 - 8.9
Total hardness (°F) 1 - 88 18 - 33
Fluoride (mg/l) 0.03 - 1 0.10 - 0.20
Magnesium (mg/l) 1 - 34 12 -22
Nitrate (mg/l) 1 - 9 5 - 16
Nitrite (mg/l) < 0,002 < 0,002
Potassium (mg/l) 0.3 - 7.3 0.8 - 3.7
Fixed residue at 180°C 22 - 987 204 - 542
Sodium (mg/l) 0.3 - 67 5 - 57
Sulphate (mg/l) 2 - 100 10 - 120

*Comparison with the data on 17 natural mineral water labels in Emilia-Romagna supermarkets.

A comparison of the average results of analyses performed on Hera-supplied water with major bottled mineral water brand labels highlights the excellent quality of the tap water Hera supplies to some 3.6 million people.

For nitrate and for hydrogen, chloride and sulphate ions concentration (indicator parameters) there are values higher than those stated on the mineral water labels, but for these parameters, the values found by the analyses carried out by Hera and the local health authorities are 83% (nitrate), 87% (chloride) and 80% (sulphate) lower than the legal limits (for hydrogen ions concentration, the average value found, pH equal to 7.7, is within the limits required by law: pH between 6.5 and 9.5); for all 4 parameters 100% of the analysed samples are compliant.

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