Really interesting facts about Berlin’s rainwater sewer system!
Two waterworks employees manually cleaning the rainwater sewers under Hohenstaufenstraße in Berlin-Schöneberg, 1930). Image via Berliner Wasserbetriebe.
It was a rainy morning in Berlin today so here’s a rain-related fact: did you know that Berlin‘s rainwater sewer system measures 3,300 km? That is approximately the distance between the German capital and the ancient city of Luxor in Egypt.
The stormwater sewers are not the only elements of the underground sewerage system protecting the city from the consequences of excessive rainfall. Berlin can also rely on its 1,900 km of mixed sewers (the older canals, mostly located in the city centre, transporting both household waste water and rainwater when necessary). No to mention the subterranean storage spaces where in case of heavy rains (not unusual in Berlin during the last decade) where the water can be held and subsequently transported to purification stations, instead of allowing it to…
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AuntyUta 
Interesting blog