Wow!!!, Just finished reading all of this. First, congrats on the chiller Naja002. I did one recently and other than the noise (it was in the same room as the computer) I loved it. I wish I had another room I could put mine in so I could run it 24/7.

Now the second thing, NotSoCoolJ, why are you in here thread crapping? State your objection to using tap water and move on. Do you think you are going to change his mind? He has been using tap water for awhile and has had good results, hooray! Leave it alone. The world isn't going to end and if someone takes this thread as being ok to run tap water in their loop then that's ok. Would I use tap water? Nope, but I have hard water in my area and running to Wally World for 4 gallons of distilled water is easy for me. When I lived in Memphis, TN the tap water there was better than most bottled water, somthing like top 10 for clean water in the U.S., I might have considered using it.

Anyway, my point is, state your objection in a non-threatening way and then move on. If you feel that strongly about it, start your own thread in the LC section, I am pretty sure you have enough posts to start your own thread.

Again, Naja002 great work on the chiller.