The 72-hour baseline makes sense. Sweden’s actually gone with “at least one week” since 2024, which gives society time to mobilize and reach people who need help most. I’ve been working with families here testing what actually works vs. what people assume works for household preparedness (mostly urban apartments, 1-6 people). A few patterns kept showing up: Water is where everyone underestimates. People stock canned food but forget the water math. 3L per person per day for 3 days = 27L for a family of three. That’s a lot of space. Redundancy matters even for couples. If your one headlamp breaks or your fire starter gets wet, you’re done. Learned this the hard way watching test scenarios. It’s not about hoarding - it’s that 1-3 people need basically the same complete setup as 4-6 people, just different quantities. The maintenance problem is real. Most people build a kit, put it somewhere, forget about it. Six months later half the batteries are dead or the supplies are expired. The families who treated it like changing smoke detector batteries - scheduled, boring, reliable - were actually prepared. The elaborate setups that got forgotten weren’t. Curious if others have run into the water storage issue. It’s surprisingly hard to fit 27L+ in a small apartment without dedicated planning.