Fortunately, they are several different options that you have when it comes to carrying water on your camping trip. Of course, the kind of camping you're doing may offer you easier solutions. If weight is not a concern for you and you're staying in one place, perhaps not even that far from your vehicle then carrying your water and other such items in a cooler is the best way to do it. You can fit bottled water, gallons of water, and even larger jugs of water into a cooler which makes it very convenient because you'll have all that you'll need right there and with you at the campsite the whole time. It is even better if you have other people with you that can help carry it, or if you have a cooler with wheels that you can pull along with you. When you don't have that option then you can use hard-sided water jugs or collapsible water jugs which you can fit into your pack. Collapsible jugs take up less space but lose on some durability while the hard-sided jugs have excellent durability but take up a lot of space. The final option to carry water is to bring water filters or purification tablets or droplets so that you can utilize any water source you come upon without having to constantly lug around huge jugs of water. The only downside to this is you need to make sure your desired route and campsites have access to water close by, otherwise, you'll be in trouble.