A nice day out. Ed and Joseph, incharged of the sewer system of Great Chicago showed us a XXL big pumping station at Calumet Water Reclamation Plant. 120 under the ground. A 9 meter pipe comes in and the wastewater has to be pumped a 120 meter higher to the wastewater treatment plant. One of the 7 plants serving 10 Mio. people in the region.
What a show. US dimentions are bigger than at home. A great experience, and nice collegeus. Joseph even talked a brilliant German and explaint a lot.