Emergency Water Storage 500 Gallon Vertical TankPoly Plastic Water & Chemical Storage Tanks FDA Approved 500 Gallon Vertical Storage Tank Our polyethylene storage tanks (also known as poly plastic tanks) are engineered for safe, long term storage of potable water, rainwater, non potable water, and soft industrial chemicals. Manufactured from high density polyethylene (HDPE) that meets FDA requirements these tanks are UV stabilized, corrosion resistant, and impact resistant, ensuring years of