3000m world record?

Forgive me. I tried to find a thread where I could ask this seemingly silly question, but I couldn't find one. I also have trouble finding the answer elsewhere. Obviously this is not an official FINA event. But it does seem to be a popular event. I've seen swim-clubs doing local charity/fundraiser type things around the 3000m swim. I think I will try one soon. Obviously I won't attack the WR/world best, but maybe I can emulate my other distance percentile-levels. I'm guessing the WR is around 30min SC? 31min LC? Thanks in advance if anyone has info on this strange request.