ΑΠΟΦΡΑΚΤΙΚΗ ΑΝΤΩΝΙΟΥ
https://zenwriting.net/z5lctoz971/in-the-united-states-there-are-nearly-500-000-plumbings-plumbings-recognize-w7vl
A lot of property owners don't assume much about their drain lines. As long as they are working right, they run out view and also out of mind. When an issue does turn up, it can suggest a significant expenditure