With almost 90 years of history, the galvanized steel tanks are G-90 grade 20 gauge metal made in the USA. We do not import foreign steel. The top is 22 gauge. After the tank is constructed, a paint / epoxy lining is applied to the interior of the tank to provide a protective barrier between the water and the metal itself. This product is FDA approved for potable (drinking) water applications and is ANSI / NSF 61 certified. Each tank is tested at the factory to ensure that it is watertight.
LIFE SPAN: 30-35 years
WARRANTY: 1 year