hese high capacity water prepared storage tanks are the best and only solution for high capacity water storage. Each BPA free tank can store up to 160 gallons of water and can be stacked two high, or connected together in a series for maximum convenience. The tanks are not pressurized so can't be run in-line with your in-home water system, but can be connected and filled as end of line. The Department of Homeland Security recommends that each person needs a minimum of one gallon of fresh water per day for cooking, drinking and sanitation. These water prepared heavy duty tanks make keeping a sufficient water supply for emergencies easy and convenient.