Oh dear, that's terrible. My kitchen is very old and grey, it's done good service, but nowadays I wonder if it will last until I have saved up enough money to replace it!
Fortunately, I don't have any plumbing issues, a few floods over the years with burst pipes (boiler and bath) or the stop cock broke, but gradually all the vulnerable worn parts have been replaced or repaired, so life is pretty quiet these days.
The flat in London was a different story as there were often leaks from the flat upstairs, although even those were quickly resolved.
I hope you get your problems sorted soon, although it sounds like an issue on a grand scale.