A closed container with a water-tight, screw-top lid is essential hiking gear. An example is a common water bottle, which is available in many shapes, sizes, configurations, and expense options.
Another example is a collapsible bladder or bag, which may have only a screw top lid, or which may have an additional delivery tube and bite valve attached. The tube varieties are usually part of a pack or load-harness carry system.
For health and sanitation reasons, water must be purified before drinking. Carry at least one of the following purification options: