Hi there. I'm new to posting, but I've been reading these forums for some years, and from what I understand (and I'm happy to be corrected if I'm wrong), unless the debt is in your name, you have nothing to worry about. The water company is not legally allowed to disconnect your supply, and any HCEOs that are sent to enforce the debt have no claim against your possessions, only the one addressed on the debt. You also don't have to let them in, they have no right of forceable entry. Although I would obviously not advise taking this route, I am aware that some people have avoided paying their water bills for years simply because the water company does not have the correct details for the residents of the property (for which they can only blame their own laziness).