Round Barrel Water Caddy allows you to take 35 Gallons of fresh water with you on your next road trip and can fit in several trailer locations or in the back of your pick-up. We manufacture it with FDA approved Polyethylene so the water is safe for you and your animals to drink. Translucent poly allows you to easily check water levels in the tank. Fill cap is located on the very top middle of the water tank. Molded in aluminum 3/4" drain insert ensure the drain attachment spot will never break, sun-rot or fail. One 3/4" shut off valves included.