αποφραξεις

https://zenwriting.net/x4wmske768/in-the-united-states-there-are-nearly-500-000-plumbings-plumbers-know-how-to

The majority of house owners do not think much regarding their sewage system lines. As long as they are working right, they run out view and out of mind. When a problem does turn up, it can mean a big expenditure