The 150-gallon (568 L) tank. A family of four needs about 120 gallons (454 L) for 30 days at 1 gallon (3.8 L) per person per day, so the 150 covers a month with room to spare.

Pick the 150 for about 5 weeks of water for four people in a 30-inch (76 cm) footprint. Pick the 250 for about 2 months in a 36-inch (91 cm) footprint. Measure your ceiling height and the path in before you order.

Yes. Each one is listed as FDA-approved food-grade polyethylene in an opaque blue that blocks light and slows algae. Fill it with treated tap water and refill it every 6 months.

The vertical tanks have fittings for a hose or a pump. If the power is out, use a hand pump or a siphon hose. The water bricks accept a standard spigot, sold separately.

Big storms, long power outages and water main breaks can cut off safe tap water for days or weeks, and news about grid and infrastructure security has more families planning ahead. Storing a month or more of drinking water at home is a simple, one-time step that covers all of those events. Fill a food-grade tank once, refill it every 6 months, and your family has water on hand whenever it’s needed.

Yes. Set it on a level floor out of direct sun, away from fuel and chemicals, and where it will not freeze. A full 150-gallon tank weighs about 1,300 pounds (590 kg), so the floor must carry it.

The tanks ship by freight truck, and you will need to be there to receive and unload them. You can also pick up for free at a Tank Depot branch. Call us for a delivery quote to your zip code.