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When the Power Goes Out, So Does Your Water. 
Here Are 7 Things Nobody Tells You.

Summary: A look at why clean water is the first thing to go when the grid does, and the one simple thing you can do about it if you plan ahead.

By Samantha Withers

Last Updated July 27, 2026

More people are getting ready than ever before. Just over half of U.S. adults now say they feel ready for an emergency. Back in 2017, it was about four in ten. Not because they're scared. Because they plan ahead. 

 

And here's the thing most of them haven't connected yet: 

When the power goes out, your water usually goes with it.

 

Not in a dramatic way. Quietly. The tap just slows. Then stops. We looked into why that happens, and what a level-headed person can actually do about it before it ever comes up. 

 

Here are 7 things nobody tells you:
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1. Your tap water runs on electricity

This is the one almost nobody realizes.

 

The water in your kitchen doesn't just appear. Pumps push it from the treatment plant, through the pipes, and up into your home. Those pumps run on power.

 

Take the power away, and the whole system between the river and your kitchen slows down.

 

Then it stops.

2. Bottled water runs out faster than you'd guess

Stacking cases in the garage feels like a plan. Until you do the math.

 

The standard advice from Ready.gov is one gallon per person, per day.

 

For a family of four, two weeks of water is 56 gallons.

 

That's about 18 cases of bottled water stacked in the garage. Heavy. Bulky. And once it's gone, it's gone.

3. "Just boil it" needs something to boil with

Boiling works. When you have power or fuel, a pot, and time to wait.

 

Take out the electric stove or the gas line, and boiling isn't an option.

 

And even after it cools, boiled water still has the dirt and sediment sitting in the bottom of the pot.

4. A boil-water notice can last a lot longer than a day

People picture a day, maybe two.

 

Sometimes it's weeks.

 

After Hurricane Helene, Asheville, North Carolina was under a boil-water notice for 53 days. 

 

It wasn't lifted until November 18, 2024.

 

53 days.


That's the part worth planning for. Quietly, ahead of time, on a normal afternoon.

5. Clear water can still make your family sick

Here's the trap: water can look perfectly clean and still carry the things that make people sick.

 

Bacteria like E. coli. Protozoa like Giardia. You can't see either one. This is what they cause:

 

E. coli: cramps, vomiting, and diarrhea that can turn into dangerous dehydration fast.

 

Salmonella: fever, diarrhea, and stomach pain that can knock you out for a week.

 

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.

6. Now the honest part

Anybody who tells you one little straw does everything is selling you a story.

 

A filter strains out bacteria and protozoa. 

 

It does not remove viruses. It does not remove chemicals or heavy metals.

 

The rule is simple. Know what your gear does, and know what it doesn't.

 

The good brands tell you that up front. That's how you know which ones to trust.

7. The fix isn't a bunker. It's one thing you keep ready.

This is the part that surprises people most.

 

You don't need a basement full of gear to be ready for this.

You need one thing that turns the water you can already reach into water you can safely drink.

 

That's what PureFlow does.

 

It's built for real emergencies. Not a weekend hiking trip.

You put one end in the water you've got. You drink clean water out the other.

 

Screw it onto a bottle of dirty water, give it a squeeze, and it fills a clean container for the whole group. For drinking, for cooking, and for washing up.

 

One straw filters up to 1,800 gallons of freshwater. 

 

It removes 99.99% of the bacteria and protozoa that can cause waterborne illness. 

 

(It doesn't remove viruses or chemicals, and PureFlow says so right on the page.)

 

It's third-party lab-tested, and made with FDA food-contact-compliant, BPA-free materials.

 

And here's the part that matters most if you're storing it for someday: it has no expiration date.

 

Buy it once. 

 

Keep one in the drawer, one in the truck, one in the bag.

If You Want Your Family To Be Covered
You Just Have To Be Prepared

The best time to sort this out is a quiet weekend. Not the day a storm's already on the news.

 

PureFlow is running a sale right now, up to 67% off. 

 

Current pricing is on the company's site. It's backed by a 30-day money-back guarantee.

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Sources:

  • FEMA, National Household Survey on Disaster Preparedness (perceived preparedness: 51% in 2023, up from 42% in 2017). fema.gov
  • Ready.gov, "Water" / "Build A Kit" (store at least one gallon of water per person per day for drinking and sanitation). ready.gov/water
  • U.S. EPA Region 4 news release, "City of Asheville lifts systemwide boil water notice issued after Hurricane Helene," November 19, 2024 (notice lifted Nov. 18, 2024, after 53 days). epa.gov
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