I've been talking to a dude from UK and apparently they're not allowed to install one of those water guns near your toilet that act like a bidet, so you can clean your bum because they're regulated and can't just be installed like usual. I was trying to understand the reasoning behind it but I couldn't find anything yet so I'm here. So I imagine the municipal water is pressurized and goes into your house system, to the sink and shower and then, if you add it, a jet gun. The main point of concern afaik is contamination, so you're saying it's illegal to just connect it because there's a risk someone's going to shit down the jet gun/bidet? I guess this is a plumbing question also.