Storing water is the hardest part of apartment prepping. It’s incredibly heavy (8.3 lbs per gallon), takes up massive volume, and can cause catastrophic damage if it leaks over your downstairs neighbor. Once you have water stored, learn how to purify it without a filter if your supply runs low.

Here are the safest, most space-efficient ways to stash H2O without a garage.

1. The Under-Bed Stash (WaterBricks)

WaterBricks are interlocking, heavy-duty plastic containers that hold 3.5 gallons each. Lying flat, each one is 18 x 9 x 6 inches, so a bed with 6 inches of clearance takes 4 to 6 of them under a queen frame: 14 to 21 gallons, completely out of sight.

2. The Bathtub Bladder (WaterBOB)

This is the ultimate hack for renters. A WaterBOB is a heavy-duty plastic liner you lay in your bathtub. If a hurricane or winter storm is approaching, you place it in the tub, attach the nozzle to your faucet, and fill it up. It holds up to 100 gallons of clean drinking water that stays fresh inside the sealed bag. Once the emergency is over, you throw it away.

3. Stackable 5-Gallon Jerry Cans for the Closet

If you happen to have a deep closet, traditional tall 5-gallon jerry cans (like Scepter cans) are your best friend. They stand vertically, utilizing vertical closet space instead of floor space.