I have been carrying water around in a two liter pop bottle in my woods loafing for a long time. Well the last trip to town, oldest son sees these metal water bottles on the everything's a dollar table and grabbed a few. I don't know how much it holds but i'd guess a quart, maybe a bit less, but more than a pint. Anyway It got me to thinking and I wondered how many of these bottles full of water I would go through in a day just around the house. So today I started by filling it up when I got up and have been filling it up and using it for cooking / drinking as my water measure. It is on its 5th filling. I have used it to make coffee, drink, and cook three meals. Still carrying 5 of these things in a pack would be a lot. I am pretty sure that one and a pocket filter pump might be less weight, and around here water is just around the corner most places. Anyway I wanted to throw out a suggestion that others try to see how much water they would use if they just get the water containers they plan to carry or do carry when they go to the woods and just use em for a few days and keep track of how many bottle fulls you use, and then think about how you would carry or refil them out in the woods. I'm still not sure how much it is or if the smaller bottle / filter beats out carrying a 2 liter soda bottle and boiling the found water. Hoping I could manage with the 2 liters per day. (it gets hot in Alabama, and isn't unusual for me to be able to tip up a two liter bottle of water and drink half of it at one go if I want to.) So what I'm getting at is how much water do ya'll carry and replace each day in the woods and around the home. Skip things like toilet flush and showers. Just food / drinking use. Also how much do you like to drink a day in summer and winter weather. My estimate is 1 - 2 gallons per day in real hot, and about 1 gallon per day in winter. More if working hard / sweating. It is better to play with this and figure it out at home where mistakes have a low cost instead of getting out and needing more than you have / can find. Well ramble off for now. Thad. P.S. Look forward to hearing others thinking on this and probably better way of stating it for understanding. T.