Grab some gear. You name the price at the Explore Auctions. You will drink at least 1 gallon of water per day while hiking in the Grand Canyon. If you are bound from the rim to a dry camp, you will need to pack at least 1.5 gallons, provided you reach a reliable water source early on the following day. Hikers must always carry water on any Grand Canyon trail, even on the Bright Angel and North Kaibab trails, where drinking water is provided.
Pipelines can break.
As a rule, hikers should always carry at least 1 gallon of water on extended trips away from known water sources. Heed the Park Service recommendation that your water supply should be the heaviest item in your pack. Remember to at least double your normal intake of food to help meet your energy and electrolyte needs. Since adequate water intake is so critical to a safe and enjoyable trip in the Grand Canyon, it is surprising that so many hikers carry their precious water supply in fragile containers, particularly thin plastic milk jugs. These jugs burst easily if dropped, and can melt on hot rocks in summer.