"A blackout doesn't always shut your water off right away."
That's true, but that's not actually the risk.
If you're on well water, your pump runs on electricity, that means if there's no power, you can't get any water, even though your pipes are fine.
If you're on city water, floodwater and storm damage can get into the water mains before the water ever reaches your tap, even if your power never goes out.
Asheville, North Carolina, went 53 days without safe tap water after Hurricane Helene.
With PureFlow in your kitchen drawer, you can filter the bacteria and protozoa out of the water around you - the stuff that makes you sick. You fill a bottle, screw on the straw, and squeeze.
That's it.