Mineral Water Analysis – Ingredients and Health
A mineral water analysis examines the chemical composition of mineral water, including its mineral and trace element content, helping to assess water quality and health benefits.
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A mineral water analysis examines the chemical composition of mineral water, including its mineral and trace element content, helping to assess water quality and health benefits.
What Is a Mineral Water Analysis?
A mineral water analysis is a laboratory examination that determines the precise chemical composition of a mineral water. It measures the concentration of dissolved minerals, trace elements, ions, and other constituents. The results are listed on every bottle label as a so-called Typical Analysis, allowing consumers and healthcare professionals to evaluate the water and select it according to individual health needs.
What Is Measured in a Mineral Water Analysis?
A mineral water analysis determines a range of parameters that provide information about mineral content and water quality:
- Cations (positively charged ions): Calcium (Ca²⁺), Magnesium (Mg²⁺), Sodium (Na⁺), Potassium (K⁺)
- Anions (negatively charged ions): Bicarbonate (HCO₃⁻), Sulfate (SO₄²⁻), Chloride (Cl⁻), Fluoride (F⁻), Nitrate (NO₃⁻)
- Trace elements: e.g. iron, zinc, manganese, selenium
- Total Dissolved Solids (TDS): The total amount of all dissolved minerals in mg/l
- pH value: Indicates the acidity or alkalinity of the water
- Carbon dioxide content (CO₂): Relevant for taste and acidity
Legal Framework and Quality Assurance
In Germany, mineral water is regulated by the Mineral and Table Water Ordinance (MTVO) and European directives. Natural mineral water must originate from underground sources protected from contamination and may not undergo chemical treatment at the point of extraction. Mineral water analyses must be performed regularly by accredited laboratories to verify consistent composition and microbiological safety.
Health Relevance of Mineral Water Analysis
Calcium Content
Calcium is essential for building and maintaining strong bones and teeth, as well as for muscle function and blood clotting. Mineral waters with a calcium content above 150 mg/l are considered calcium-rich and can help meet daily requirements. This is especially relevant for individuals who consume little or no dairy products.
Magnesium Content
Magnesium supports muscle and nerve function, energy metabolism, and protein synthesis. Mineral waters containing more than 50 mg/l of magnesium can contribute meaningfully to the daily intake of this important mineral.
Sodium Content
Sodium plays a key role in fluid balance and nerve conduction. For people with high blood pressure or kidney disease, low-sodium waters with less than 20 mg/l sodium are recommended. For the preparation of infant formula, only low-sodium mineral water should be used.
Bicarbonate
Bicarbonate acts as a buffer in the body and may help relieve heartburn or gastric acidity. Waters with high bicarbonate levels (above 600 mg/l) are often recommended for athletes, as they may help neutralize lactic acid in the muscles during exercise.
Sulfate Content
Sulfate-rich water (above 200 mg/l) can stimulate digestion and has traditionally been used for digestive complaints. For infants and young children, waters with high sulfate levels should be avoided.
Fluoride
Fluoride strengthens tooth enamel and can help prevent cavities. However, high fluoride concentrations (above 1.5 mg/l) are not suitable for infants and young children, as they can lead to dental fluorosis.
Total Mineralization and Water Types
Based on total dissolved solids, mineral waters are categorized as follows:
- Oligomineral water: Below 500 mg/l TDS – particularly suitable for infants, young children, and everyday hydration
- Mineral-rich water: Above 1500 mg/l – contains a particularly high concentration of dissolved minerals
- Medium-mineralized water: 500–1500 mg/l – well suited for daily consumption
Practical Use of Mineral Water Analysis
Consumers can use the analysis printed on bottle labels to select a water that best meets their individual needs. People with increased calcium requirements (e.g. pregnant women, older adults), athletes, or individuals with specific health conditions can use the mineral water analysis to support their mineral intake. The mineral water analysis is also playing an increasingly important role in nutritional medicine and dietary counseling.
References
- German Federal Ministry of Food and Agriculture (BMEL): Mineral and Table Water Ordinance (MTVO), last amended 2021.
- Association of German Mineral Springs (VDM): Information on mineral water analysis and quality assurance. www.vdm-bonn.de
- World Health Organization (WHO): Guidelines for Drinking-Water Quality, 4th Edition. Geneva: WHO Press, 2011.
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