DC-910000-1.2, Duracast 10000 Gallon Plastic Water Tank | 910000 Store water the safe way with Duracast’s 10000 gallon plastic water tanks. These plastic tanks are made of FDA approved polyethylene resin for safe potable water storage. Green and black tanks are designed to block out the green spectrum of light, which slows down the growth of waterborne algae. Able to store large quantities of water, these tanks are often used for fire sprinkler systems, manufacturing, construction, irrigation, agriculture and well storage. To ensure years of quality storage use, these tanks are able to withstand physical attack and stand up well in unfavorable conditions. The UV-stabilized resin extends the life of these tanks outdoors. These tanks are equipped with a larger, 22-inch vented lid and feature measurement indicators. This is a 1.2 specific gravity tank.