This has been an issue since i bought my flat four years ago. Ancient tenement building and the toilet takes ages to fill up. About 2 hours now but I'm sure it was less when i moved in, tho still a long time - its more noticeable since my partner moved in and theres two of us using it. Also the bath taps barely run. Fantastic water in all other taps in the flat. Has anyone had experience of this, what could be causing it and most importantly how expensive is it going to be to fix!