ΟΙΚΟΝΟΜΙΚΕΣ ΑΠΟΦΡΑΞΕΙΣ

https://zenwriting.net/x4wmske768/in-the-united-states-there-are-practically-500-000-plumbers-plumbing-nhp5

A lot of property owners don't think much regarding their drain lines. As long as they are working right, they are out of sight and also out of mind. When a problem does appear, it can indicate a substantial cost