More and more people produce their carbonated mineral water with so-called Sodabereitern itself. But is clear water always clean?
Water - a strictly controlled food
Without liquid, humans can only survive for a few days. The healthiest drink for the body is water. Drinking water is produced from river, sea, spring or groundwater.
Before it is available to the public network, it goes through several purification steps. The water that comes from our pipes is subject to the strict regulations of the German Water Ordinance - it is probably the most strictly controlled food in Germany.
Sanitary water runs through our pipes, but this can be contaminated by metals such as copper and lead from water pipes or pollutants such as nitrate from the soil.
How clean is our tap water?
More than half of all drinking water pipes in Germany are made of copper. It is true that copper is an essential trace element for humans, from which the adult should feed around 1 to 1.5 milligrams per day. However, if the water has an acidic pH below 7, the copper can be released from the pipes and accumulate in the water.
Until the seventies, lead water pipes were installed. Lead is poisonous in larger quantities, especially for children. Soft water in combination with such pipes can lead to high lead concentrations in the tap water, which may cause damage to health.
Nitrate and nitrite are among other ingredients of fertilizers. Depending on the oxygen content of the water they are converted into each other. Nitrate dissolves well in water and can therefore reach the groundwater by leaching the soil with the rain. In areas where strong agriculture or intensive grape cultivation is practiced, the levels of nitrate may be increased. The limit value for nitrate is 50 milligrams per liter according to the Drinking Water Ordinance.
Burden of uranium
Drinking water contributes about 25 percent of our nitrate intake, vegetables 60 percent. Investigations have shown repeatedly in recent years that the tap water in many regions is too high burdened with uranium. A legally binding limit does not yet exist and, if it is set, is likely to be above the critical level for small children. The indicative regulatory value of the authorities is 10 micrograms of uranium per liter of water. For this reason, families with small children may need to use mineral water from bottles for food production - too high uranium levels are indicated by "not suitable for the preparation of baby food".
Examine tap water
Quick and easy test strips, among other things for the measurement of the pH value and the degree of hardness can be bought in pharmacies. More detailed water analyzes are carried out at your local waterworks.
Sodabereiter yes or no?
Despite the above-mentioned restrictions: The strict requirements of the legislature ensure a very good water quality in Germany. If you pay attention to a few things when making your own carbonated mineral water, then tap water is an ideal thirst quencher.
However, you should keep in mind that even "bubbled tap water" does not contain the amount of essential minerals (for example, calcium) as purchased mineral water. Most people can compensate for these deficiencies through a healthy diet. However, in persons with special needs (pregnant women, athletes, people with conditions such as osteoporosis or long-lasting diarrhea) it is better to cover the intake with suitable mineral waters.
You should watch out for drinking water
- Do not use water that has long been in the line (in the morning, after work or after vacation). By briefly draining the water, harmful substances can be minimized.
- Bottles in which you fill your water should be absolutely clean and hygienic.
- Prefer glass bottles - these can be cleaned better.
- Consume your water as fast as possible. When stored for a long time, store it in the refrigerator, which protects against germ multiplication.
- Use water to make baby / toddler food Make sure your tap water does not exceed critical limits. If in doubt, use bottled water.