Hello Domekri, Already seen this (I'm a plumber) but the causes are many and varied! You have to reason logically to find the cause. 1) Since your electric wires are black too, your rainwater inside the pipes is not the cause, and apparently it is a surface oxidation. 2 ...

Bibiphoque wrote: 70 € annual fee !! they blow their noses in the silk !! It's scandalous ! @ +: cry:: cry: yes, that's the price in Wallonia, apparently ... I'm on the cile. And I also sent the index back online, you can view your invoice straight away, it's practical. : D @ +

Here is a copy of my water bill, 85.23 € for 18m³; that gives the 4.735 € / m³. From what I see in the price, you have to exceed 30m³ to be around 3 € / m³. NB: not representative of an annual consumption, I did not live long enough in the building to know https: //www.econologie.com ...