Stainless steel is an alloy primarily composed of iron, carbon, and chromium, making it highly resistant to corrosion. This property is particularly important for water storage because untreated water can be corrosive to many materials. Unlike plastic or fiberglass tanks, which may degrade or become brittle over time, stainless steel tanks can withstand extreme weather conditions, temperature fluctuations, and high-pressure scenarios. This durability means that a stainless steel tank can last for decades with minimal maintenance, making it a cost-effective investment for both residential and commercial applications.