Access to clean water is essential for survival during outdoor adventures, and knowing how to purify water in the wilderness can save you from harmful contaminants. Start by identifying a water source—streams, rivers, and lakes are preferable over stagnant water. The simplest method is to boil the water, which kills bacteria, viruses, and parasites; let it boil for at least one minute (or three minutes at higher altitudes). If boiling isn’t an option, use a portable water filter or purification tablets, which are lightweight and easy to carry. Filters remove most sediment and microorganisms, while tablets use chemicals like iodine or chlorine to neutralize pathogens. For a natural option, sunlight can be used in an emergency; fill a clear plastic bottle with water and leave it in direct sunlight for several hours, though this method is less reliable. Always have a backup purification method in case your primary option fails. By mastering these techniques, you can ensure access to safe drinking water and stay hydrated in the wilderness.