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three days is all you get. here's what happens after that.

You can survive three weeks without food. Only three days without water. Most families have never thought about what happens after that.

Burt Tanner

Emergency Preparedness Expert

The tap doesn't always stop all at once.

 

If you're on well water, your pump runs on electricity. No power means no water, even though the pipes are fine.

If you're on city water, floodwater and storm damage can get into water mains before it ever reaches your tap, even if the power never goes out. 

 

That's why boil-water advisories follow floods and water main breaks just as often as blackouts.

 

Asheville was under a boil water advisory for 53 days after Hurricane Helene. Jackson, Mississippi went weeks without safe water after its treatment plant was overwhelmed. Calgary lost its water main the week before New Year's.
 

And sometimes there's no tap at all. 

Evacuations, flooded roads, and downed power lines can put you in your car, a shelter, or outdoors with no faucet in reach, just whatever water's actually around you. The bottled water aisle empties within hours every time this happens, and most families have nothing in the house but what's already in the fridge.

There are water filter straws that most people have already seen at an outdoor store. Those are built for hikers, a few hours on a clean mountain trail, not a week of pulling water from whatever's around your house. They filter at coarser pore sizes, tap out at lower capacities, and sit in a bag until the plastic degrades.
 

That's the gap PureFlow was built to close.

PureFlow uses a hollow-fiber membrane with thousands of microscopic tubes, each one small enough to physically block bacteria and protozoa, but too small for them to pass through. No chemicals. No power. No moving parts. Just the size of the tube doing the work.

 

It filters down to 0.01 microns, about 10 times finer than the straws you'd find at an outdoor store. It removes 99.99% of the bacteria and protozoa that send people to the hospital. Things like:
 

E. coli: cramps, vomiting, and diarrhea that can turn into dangerous dehydration fast. In severe cases, it can cause kidney failure that's fatal for kids and older adults.

Salmonella: fever, diarrhea, and stomach pain that can knock you out for a week. It can turn fatal for infants, older adults, and anyone with a weakened immune system.

Cholera: watery diarrhea so severe it can cause fatal dehydration within hours if it's not treated.

Giardia: diarrhea, gas, and cramping that can drag on for weeks.

Cryptosporidium: watery diarrhea and dehydration that can turn life-threatening for kids and anyone with a weakened immune system.
 

PureFlow's membrane blocks all five before they ever reach your mouth.

Proof: Real Third-Party Testing

PureFlow doesn't self-certify. Their filtration technology is third-party lab-verified, and gets pressure-tested for membrane integrity, seal strength, and leak resistance. 

Made with FDA food-contact-compliant, BPA-free materials, the same material standard used in IV filters and infant feeding equipment.
 

They're also upfront about what it doesn't do. PureFlow removes bacteria, protozoa, and microplastics. It doesn't remove viruses, chemicals, or heavy metals. No water filter straw on the market does this. For viruses, pair it with purification tablets or UV treatment. For chemicals, you'd need activated carbon or reverse osmosis. They'd rather you know exactly what you're carrying than oversell it.

"We lost water for three days last year, and the stores were cleared out in hours. Never want to get caught like that again. We've got one in each car and a few in the house now. It's the kind of thing you pray you'll never need, but knowing we can filter water safely if it ever happens again means a lot." - Susan Pearce (Verified buyer)

More Than Just a Straw

Most filter straws are one piece of plastic with a filter jammed inside. PureFlow's a full 6-piece system, built to do more than sip.

💤 Filter it. A 0.01-micron hollow-fiber membrane blocks bacteria and protozoa before they ever reach your mouth.
🌿 Carry it. Two ounces, pocket-sized, light enough for your kid to carry their own.
🕊️ Restore it. The backflush syringe clears sediment and keeps your flow strong, even after heavy use in muddy water.
☁️ Trust it. No expiration date when stored dry, made with FDA food-contact-compliant materials, third-party tested.

Limited Time Sale

Get Up To 67% OFF Now!

PureFlow is having a limited time sale right now where you can get the PureFlow Emergency Water Filter Straw for up to 67% off. Click the button below to get yours now before this deal goes away!

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No Special Magazine Articles. Just Real Lab Testing.

A message from PureFlow:

We don't chase headlines. We chase something more useful: making sure the PureFlow Emergency Water Filter Straw actually works when you need it to. PureFlow is lab-verified, third-party tested for bacteria and protozoa removal, and is also pressure-tested for membrane integrity and leak resistance. We even offer a 30-Day Guarantee.

Instead of buying special articles in magazines, we put all our effort into making sure PureFlow is the best it can possibly be. 

We believe so much in our product that we let our product do the talking. 

Not a paid spokesman.

Limited Time Sale

Get Up To 67% OFF Now!

PureFlow is having a limited time sale right now where you can get the PureFlow Emergency Water Filter Straw for up to 67% off. Click the button below to get yours now before this deal goes away!

00
HRS
00
MIN
00
SEC

Get PureFlow For Up To 67% OFF Now!
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