"After UV treatment, ceramic filtering, and chlorine dioxide treatment of the water, I then carry 32 ounces of my water in a clear plastic bottle on top of my pack so it's exposed to the sun's UV rays most of the day."

Brum, I see that you are doing some serious treatment to your water. I was just curious, are all these steps for just when you are hiking in Mexico, or would you use the same method in the US?