Water canister
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A water container, water canister or water can is a medium-sized portable container for transport, storage and use of water. Large plastic bottles are sometimes called "canisters". Water canisters can for example be used for drinking water, wastewater or showering. Water canisters are used for excursions, camping, boat trips, in cabins without tap water, or as a household drinking water reserve in case of emergency.
Water canisters come in many different materials and shapes, but are usually made from rigid plastic with shape as a square or rectangular cube. Typical capacities lie around 5 to 25 liters for household use. If the water is to be used for drinking, the plastic of both the canister, screw cap and tap (also called water spigot) should be food-safe.[1]