Why you shouldn’t drink hot tap water

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The German Federal Environment Agency strongly advises against using hot tap water for consumption or food preparation, citing possible health risks and loss of quality.

Risks in the hot water system
Due to circulation, hot tap water often remains in the pipes for longer. While this movement is necessary to prevent the formation of legionella bacteria, it also means that substances such as heavy metals can be released from the pipe materials—a problem that is particularly common in older or poor-quality installations.

Hot water standing in dead pipe sections can also accumulate pollutants, making using it even more problematic.

Legionella and heavy metals: invisible dangers
Legionella can be inhaled via aerosols when showering. To prevent them from multiplying, hot water in pipes is kept at a minimum of 60 degrees and constantly circulated. However, this measure increases the likelihood of pollutants such as heavy metals being transferred into the water—a vicious circle that consumers can avoid by choosing cold water.

The safe alternative: cold tap water
Drinking water is one of the most strictly monitored foods. Its quality is excellent as long as it is fresh from the tap. However, after several hours of standing still in the pipes, the water should only be drained until it becomes cool—an indicator of freshness. This precaution prevents the consumption of so-called stagnant water, which can contain harmful substances.

Energy consumption and environmental impact of hot water
In addition to the health risks, hot water strains your wallet and the environment. Ten percent of a household’s energy costs are spent on heating water. Dripping taps can waste thousands of litres of water every year, which unnecessarily drives up energy and water costs. Conscious use of hot water helps to reduce CO₂ emissions and save money.

Tap water: what you need to know:
Avoid hot water: Only use cold tap water for drinks and food.
Flush pipes: After long periods of standing, drain the water until it is cool.
Expert help: Hire certified specialist companies to check old or problematic installations.
If you follow these simple measures, tap water remains safe, environmentally friendly, and cost-effective.

  • source: oe24.at/picture: pixabay.com
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