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Family water

Gravity Water Filter Kit (1 Gallon)

Gravity Water Filter Kit (1 Gallon)

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When the tap water can't be trusted, a straw keeps one person drinking. This kit makes clean water for the whole family — a gallon at a time, with no pump and no power.

  • 1-gallon bag: fill it, hang it, done
  • 0.01-micron filter blocks bacteria
  • No pump, no power, no chemicals
  • Packs flat for any go-bag
$79.95USD
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30-day returns on unused items. Arrived damaged or defective? Contact us within 7 days and we'll replace it or refund you. Refund policy

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Gravity water filter bag hanging in a kitchen during a power outage, filling a pot

Family water

A straw keeps one person drinking. This keeps the whole family going.

Official guidance says to plan one gallon of water per person, per day. When a boil-water notice hits or the tap stops, that's four gallons a day for a family of four. This kit turns a river, a lake or a rain barrel into clean water a gallon at a time — no pump, no power, no chemicals. Fill it, hang it and let gravity do the work.

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What's happening right now

Why families are getting ready

Jul – Aug 2026

Hackers hit U.S. water systems

About 36 water systems were targeted in Minnesota, and officials in at least seven states have pointed to Iran.

Source: The New York Times, FOX 9
Nov 2, 2026

U.S. strikes Iran's Qeshm Island

The war that began in February keeps the Strait of Hormuz in crisis. Tehran warns any renewed war would be “longer and bigger.”

Source: Al Jazeera, Fox News
2025 – 2026

Europe: be ready to survive 72 hours alone

The EU asks every household for 72 hours of autonomy. Sweden and Norway now say a full week.

Source: European Commission, Euronews
Jan 2026

FEMA stages 300+ generators

A severe winter storm threatened power outages across several states before it even hit.

Source: FEMA

You don't have to predict a war to be ready for one bad week. The water from your tap may not be safe to drink.

Why it works

Clean water for everyone, hands-free

Gravity does the work

Hang the bag and open the valve. No pumping, no squeezing, no batteries.

0.01-micron hollow fiber

Blocks bacteria, parasites like Giardia and Cryptosporidium, microplastics and sediment.

1 gallon per fill

A full day of drinking water for one person, in a single fill.

Gravity water filter kit: 1-gallon bag, filter, hose and clean-water pouch

Fills bottles and pots

Water runs into the clean pouch, a bottle or the cooking pot.

Packs flat

The bag rolls up and the whole kit fits in a drawer, a car or a go-bag.

Easy to keep working

Push clean water back through the filter to restore the flow. Store it dry.

72 Hour Ready

Inside the filter

Thousands of tiny tubes. One job: clean water.

Each fiber is a tiny tube with pores just 0.01 microns wide — thousands of times thinner than a hair. Water gets through. What makes you sick doesn't.

  1. 1

    Water goes in

    Dirty fresh water flows around the outside of the fibers.

  2. 2

    0.01-micron pores

    Only water fits through the tiny pores in the fiber walls.

  3. 3

    The bad stuff stays out

    Bacteria, parasites like Giardia, algae, silt and colloids are blocked.

  4. 4

    Clean water comes out

    Filtered water flows up the inside of the fibers to you.

Gravity water filter bag hanging from a branch by a river, filling a water pouch

Simple by design

How to use it

  1. Fill it

    Open the roll top and scoop the bag full from a river, lake, pond or rain barrel.

  2. Hang it

    Clip the strap to a branch, a door frame or a hook — higher than your pot or bottle.

  3. Open the valve

    Gravity pushes the water through the 0.01-micron filter. No pumping.

  4. Drink

    Fill the clean pouch, your bottles or the cooking pot.

The difference

Gravity kit vs. boiling water

Boiling works — as long as you still have gas or power.

Ours
Gravity kit

Gravity kit

  • No gas, no power needed
  • Clean water in minutes
  • Blocks dirt and microplastics
  • Hands-free while it filters

Boiling water

  • Needs gas or power
  • Boil, then wait to cool
  • Dirt stays in the pot
  • You watch the pot

Plan ahead

Water for every person in the house

1 gallon per person, per day

That's the official rule of thumb. This kit makes it from almost any fresh water source.

Kit at home, straw on the go

The kit covers drinking and cooking at home. A straw in every bag covers the rest.

1 for the people you love

Parents or grandparents who live alone are the most exposed. The Family 6-Pack covers them too.

An honest note on safety

Like every hollow-fiber filter, this kit is made for fresh water. It does not remove viruses, chemicals, heavy metals or salt, and it does not make sea water drinkable. When water may contain viruses or chemical pollution, combine it with purification tablets or boiling. Do not let a used filter freeze.

Questions

Everything you need to know

How fast does it filter?

About 0.7 liters a minute with the bag hung high, so a full gallon takes around 5 to 6 minutes. Hang it higher for a faster flow.

What does it remove?

The 0.01-micron hollow-fiber membrane blocks bacteria, parasites like Giardia and Cryptosporidium, microplastics and sediment. It does not remove viruses, chemicals, heavy metals or salt.

What water can I use?

Fresh water: rivers, lakes, ponds and rain barrels. Under a boil-water notice it blocks bacteria and parasites, but not viruses — if the notice says to boil, do that too. Not sea water, and not water polluted by fuel or chemicals.

Do I still need a straw?

They do different jobs. The kit makes water for the whole family at home or at camp; the straw lets one person drink on the move. Many families keep both.

What if the flow gets slow?

Push clean water back through the filter to clear the membrane. If it stays very slow after that, it's time for a new filter.

How do I store it?

Rinse it, let it dry and keep it with your emergency kit. Don't let a used filter freeze: ice can crack the fibers.

What if it arrives damaged?

Contact us within 7 days of delivery with a photo and we'll replace it or refund you.

Don't wait for the next crisis

Be ready before you need it

Order today and be ready before the next emergency.

Get yours now
30-Day Returns
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Gravity Water Filter Kit (1 Gallon)
Gravity Water Filter Kit (1 Gallon)
$79.95 · Free shipping
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