Imagine you turn on the faucet and brown soup drips into your sink. Many people in Europe cannot even imagine this scenario, but the global water shortage is a real problem – also in Germany. More than two-thirds of our planet is covered with water, and yet we will increasingly have to struggle with a lack of drinking water in the future. This is primarily due to the fact that temperatures on earth are rising due to climate change. This leads to local dry periods, periods of drought and extreme weather events, which lead to a falling groundwater level in many regions. Added to this is the pollution of the little drinking water through contamination from chemical agents from industrial production and agriculture. In addition, more and more rubbish ends up in our lakes, rivers and oceans: According to BUND, between eight and twelve million tons of rubbish end up in the waters every year. By 2050 there could be more plastic in the ocean than fish. The result is an increase in global water shortages and acute water pollution.