ΟΙΚΟΝΟΜΙΚΕΣ ΑΠΟΦΡΑΞΕΙΣ
https://zenwriting.net/w4dwyhb265/in-the-united-states-there-are-almost-500-000-plumbings-plumbers-recognize
A lot of home owners do not believe much about their sewage system lines. As long as they are functioning right, they run out view and out of mind. When a trouble does show up, it can indicate a significant cost