Your Water: Safe and Healthy The tankRO 30 Gallon Water Tank is made from the best FDA graded materials and is designed to ensure your water remains as clean, contaminant free, and pure tasting as when it entered. Heavy Duty Construction -All Materials in the expansion tank are 100% food safe and FDA grade to make sure your water is tasteless, odorless, and contaminant free -The inside of the RO water tank is completely smooth to prevent damage to the bladder -The water storage tank is coated with a two-part epoxy primer and finished with polyurethane to resist damage even in the outdoors -The adjustable bladder within the water tank is made of high grade Chlorobutyl rubber and is completely airtight -The inside liner of the water filter tank is made of Virgin Polypropylene, the most durable liner even on a molecular level All the Water You Need A 30-gallon water pressure tank can hold 18 gallons of water. All tanks have a certain amount of their capacity used by the air bladder, which is necessary for drawing water from the water reservoir tank. The Perfect Tank For Your Home Free Tank Stand Comes with a tank stand to secure the tank Be Confident All components are high quality food-grade -Each RO tank passes extensive durability testing -A sealed brass air nozzle and o-ring sealed air valve caps means consistent air pressure -This reverse osmosis tank is designed to last over five years