Wastewater disposal: Better prepare cities for heavy rainfall

Wastewater disposal companies therefore demand a rethinking of city planners: they demand the "sponge city".

Even small streams can be dangerous

When it comes to flood protection, Bavaria often discusses the Danube and its planned flood polders. But even small streams can be dangerous. That's why 20 million euros were invested in Ostallgäu.

Flood protection: space as in 430 swimming pools