Water

As you can see, streams like this one cross the trail every few miles. This is where I get water sometimes. Alternatively there is usually water access near the shelters. I gather it from whichever source into my water bladder which holds two liters. It is not usually full.

For purification I use Aquamira, a product made from stabilized chlorine dioxide. It is a two part solution and very simple to use. I mix 10 drops of part a and 10 of part b per liter of water in the little cap. After letting it sit for a few minutes I pour it into my bladder. After 30 min my water is safe to drink, and it doesn't leave a nasty taste like iodine.