hi there, I’m wondering whether anyone has come across this problem before. Moved into my house a few years back and I noticed on nearly all surfaces where water comes into contact with there was a pink residue (e.g bathroom walls and grout, toilet pan, sinks) . Some areas worse than others. Whole house has been refurbed, everywhere bleached etc but over time this residue returns. I’m Constantly bleaching everywhere. It mainly occurs in the shower area as I assume this is because the curtain and walls dry off themselves instead of being wiped down with a cloth. Doesn’t take long for this residue to start showing so I’m constantly cleaning these areas. Phoned water company who said it’s not their problem as the water quality is fine and I should contact a plumber. The pipe to the house is the original lead one so I’m assuming it could be coming from that? Anyone had this issue before and know how to resolve it? Any help would be appreciated.