The History of ΑΝΤΛΗΣΗ ΥΔΑΤΩΝ ΑΘΗΝΑ
https://zenwriting.net/x4wmske768/in-the-united-states-there-are-almost-500-000-plumbings-plumbers-recognize
The majority of house owners don't believe much about their sewer lines. As long as they are working right, they are out of view and also out of mind. When a trouble does appear, it can indicate a significant expense