He's talking about likeaboss, and another stupid post he was the creator of.
Thank heaven for 0 chlorine and chloramine (we probably have the best tap water out there..), sadly we do have dangerous levels of uranium, radian, and other harmful stuff...
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It might be good for your fish, but I would be a bit nervous about drinking tap water that wasn't treated with Chlorine or Chloramine. That's how they roll in Mexico and we all know what happens when you drink Mexican tap.

Your tap water has to be treated with something to make sure there's no bacteria etc.