I'll second OBGs recommendation. The USGI water containers are the best I've ever used. I use them for camping and have several set aside for emergencies. The 2.5 gal containers are easier to carry and pour from because of the reduced weight. I've ordered mine from www.actiongear.com. Look under "Survival & First Aid, Food Rations, Water & Fuel Storage" then "Boxes, Containers, Fuel Cans".