Potable Water Applications: Water Transport, Drinking Water, Decontamination Shower Water. FDA/NSF Approved. FDA approved rugged PVC (coated nylon) Comes in eleven standard sizes. Compact-easy to store. Resists chemical contamination, mildew, rot and solar heat. RF welded seams for longer life. Severe weather tolerance to -40° F. Pillow tank fills and empties in minutes by pump or gravity flow Easily setup by one person. Potable water fabric NSF/ANSI 61 standard.