The Rothco 3-Piece Canteen Kit is a field-integrated water transport and purification system used by operators, hikers, and emergency preparedness personnel to collect, boil, and carry potable water in austere environments.

The kit consists of three purpose-matched components functioning as a single system: a 1-quart BPA-free plastic canteen for water transport, a heavy-gauge aluminum cup for boiling and cooking, and a polyester cover with felt lining, dual snap-button closure, an external accessory pouch, and ALICE Keeper Clips for attachment to load-bearing equipment. Each component nests within the next, keeping the assembly compact and field-ready. Understanding the function and nomenclature of all three components before deployment is a baseline readiness requirement.

Water purification via boiling is the primary field capability of this system. Bringing collected water to a full rolling boil for a minimum of one minute neutralizes biological pathogens including bacteria, viruses, and protozoa. At altitudes above 6,500 feet, the protocol extends to a minimum of three minutes. Boiling does not remove chemical pollutants, heavy metals, or particulates, so operators should always select the clearest, fastest-moving source available and pre-filter turbid water through cloth before heating.

Safe operation requires strict component discipline. The plastic canteen is rated for cold liquid transport only and must never be exposed to direct flame or high heat. The aluminum cup reaches scalding temperatures during and after boiling and should be handled with a gloved hand, multi-tool, or stick through the handles until confirmed cool. In sub-freezing conditions, fill the canteen no more than three-quarters full to prevent cracking from water expansion.