[MrB]

Don’t forget your hot water heater(s).
Especially if you have more than one,
that’s over a hundred gallons.

[patton]

Don’t have one - tankless.

[bgill]

If you’re storing jugs or bottles of water, store them on the floor or bottom shelf rather than an upper shelf. When they leak, and they will, it won’t drip down and ruin your other supplies.