Canned Water: A Brief History

From Steel Cans to Modern Aluminum Bottles

The story of modern water storage began with necessity. During World War II and the Cold War, the U.S. military needed reliable ways to store emergency drinking water in fallout shelters, field kits, and life rafts. Early solutions relied on heavy steel cans lined with basic enamel coatings. While functional, these containers often left water with a metallic or rust-like taste as the coatings degraded over time.

As manufacturing evolved in the mid-to-late 20th century, aluminum emerged as a better solution. Lightweight, durable, and highly recyclable, aluminum offered a significantly improved strength-to-weight ratio compared to steel. More importantly, advancements in food-safe interior liners created a barrier between the water and the metal itself, preserving taste and quality far more effectively than earlier container technologies.

Why Modern Aluminum Performs Better

Today’s aluminum water bottles and cans are engineered with BPA-free polymer liners designed to maintain peak product quality for up to 24 months. While properly sealed water can remain safe beyond that point, the two-year shelf-life standard reflects the period where taste, freshness, and liner integrity perform at their best.

This modern approach differs from specialized “emergency water” products, which may advertise shelf lives of 30 to 50 years using reinforced packaging and preservation processes intended for survival storage rather than everyday hydration.

The Advantage Over Plastic

One of aluminum’s biggest advantages is its resistance to gas permeability. Plastic bottles can gradually absorb surrounding odors and airborne chemicals over time. For example, a plastic water bottle stored near gasoline, paint, or cleaning products may eventually develop an off taste due to the material’s porous nature.

Aluminum, by contrast, creates a near-hermetic seal that helps protect water from outside contamination and flavor transfer. Historically, only thick glass or sealed ceramic vessels offered comparable protection.

Protection From Light and Heat

Light exposure can also impact water quality. Transparent containers allow UV rays and indoor lighting to trigger photo-oxidation, which can subtly affect taste over time. This is one reason many premium oils, medicines, and sensitive beverages were historically stored in dark or opaque containers.

Aluminum blocks 100% of light exposure, helping preserve freshness while protecting the contents from UV degradation.

A Modern Balance of Performance and Sustainability

The evolution of water storage has always been driven by a balance of durability, safety, portability, and preservation. Modern aluminum bottles represent the latest step in that progression, combining lightweight convenience, product protection, and recyclability in a format designed for everyday use.