I just realized something. You guys didn't think when I said 1 gallon - (or less w/ adequate water sources) that that would be my only intake?

My intent always has been to have the capability of carrying about 1.5 gallons each - with all reservoirs fully loaded.
1 gallon hydration packs in the backpacks as well as2 reserve bottles to be carried in the bottle carriers. Those bottles will be somewhere between 12oz - 24oz or more. Haven't decided yet. But I'm thinking 24 to 32oz bottles now.

With that - They can be filled over and over again at each water source - so overall on the whole trip I'm sure we will be drinking upwards of 4 gallons.