DC-910100-1.2, Duracast 100 Gallon Plastic Water Tank | 910100 Fulfill your temporary water storage needs with Duracast’s 100 gallon plastic tanks. These vertical storage tanks are made of FDA approved polyethylene resin which makes them safe to store potable water. People can use these tanks for irrigation, well storage, rain collecting and for emergency situations. Black and green tanks can be used to block the green spectrum of light and slow the growth of waterborne algae. Natural white tanks are translucent and make it easier to view content levels. These plastic water tanks can be used in both indoor and outdoor environments. They are designed to handle environmental stress well and will not break down easily in harsh conditions. The resin is UV stabilized to keep these tanks in top-notch condition. This is a 1.2 specific gravity tank.