DC-900700-1.2, Duracast 700 Gallon Plastic Water Tank | 900700 Manufactured with quality and durability in mind, these plastic water tanks are long-lasting to better meet your storage needs. These water storage tanks are made of FDA approved polyethylene resin, which makes them safe to store even potable water. Seamless and rust-resistant, these tanks are designed to prevent leaks so that you do not lose any of your water supply. Duracast’s plastic water tanks stand up well against physical attacks such as unfavorable weather conditions or environments. These tanks are equipped with a 16-inch vented lid and gallon calibrations that are molded into the plastic. People can use these tanks for irrigation purposes, rain harvesting, farming, emergency water storage and as a well storage tank. This is a 1.2 specific gravity tank.