Car washes use far less water than hand washing. © U.J. Alexander/Imago
If you want to wash your car, it is better to go to a car wash, as this is much more efficient.
Regardless of whether it is driving or parked in the parking lot: If the car is exposed to the weather, it gets dirty from time to time. Especially in spring and summer, pollen and insect remains often stick to the paintwork. There are special windshield cleaners for the windshield that allow you to get a clear view. But if the car is to be completely clean, it needs a more thorough washing process. Many car owners lend a hand themselves, equipped with a bucket of water and a sponge. However, the German Association for Gas and Water Industries (BDEW) advises against it – apart from that, washing cars by hand is not allowed everywhere, even on private property.
BDEW recommends a visit to the car wash
Due to the persistent drought in Germany, the BDEW recommends that all car owners in Germany preferably drive their car to the car wash. Modern plants are much more efficient and therefore consume much less water.
SWR also reports that around 150 litres of water are consumed during hand washing. According to the report, car washes are more economical and sustainable because they recycle the water used. In addition, the systems do not produce drinking water.
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In addition, the SWR points out special eco-washing systems that only use specially treated water from sewage treatment plants and mix it with rainwater. However, these are not yet widespread. (ök)