ΟΙΚΟΝΟΜΙΚΕΣ ΑΠΟΦΡΑΞΕΙΣ

https://zenwriting.net/x4wmske768/in-the-united-states-there-are-nearly-500-000-plumbers-plumbing-professionals-53p5

Most property owners don't think much about their sewage system lines. As long as they are functioning right, they are out of sight as well as out of mind. When an issue does appear, it can indicate a massive cost