In the military the typical load out was two, one quart canteens.I have learned to work with that.I also carry a SAWYER filter and chlorine dioxide tabs for "just in case.I have a 100 oz. Camelbak but I find cleaning it after occasional use to be a pain.Canteens (Nalgenes) just are more practical for me.
BOATMAN
John
Pretty much my experience. Ive gone with the camel back stuff and keep coming back to canteens. Even the military has started to issude water pouches, and I hated it.
2 quarts for standard day hike unless Im real familiar with the area. 3-4 if the heat is really high. Always water tabs in the canteen pocket.