1,059+ Trusted Reviews

PUREFLOW 
emergency WATER FILTER STRAW

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1,059 Trusted Reviews

PUREFLOW 
emergency WATER FILTER STRAW

SHOP NOW

your water secured

99.9% bacteria filtration

up to 1,800 gallons

ultra-light & portable

no electricity or batteries

Survivor Filter Straw
Survivor Filter Straw
Survivor Filter Straw
Survivor Filter Straw

Excellent Trustpilot 1,059+ Reviews

Survivor Filter Straw

removes 99.9% of bacteria down to 0.01 microns

third-party lab tested for bacteria & protozoa protection

filters up to 1,800 gallons of water

advanced hollow fiber membrane built for long-term use

bpa-free, fda-grade materials

no added chemicals, no plastic taste

individually inspected for best performance

every straw is tested before leaving our facility

Learn More

FDA Approved Materials

30-Day Money Back Guarantee

3rd Party Tested & Approved

Product Overview

The PureFlow Water Filter Straw provides on-demand access to clean drinking water in outdoor and emergency situations.


It uses a 0.01-micron hollow fiber membrane to physically remove 99.9% of bacteria and protozoa, including E. coli, Giardia, and Cryptosporidium.


The filter operates without chemicals, batteries, or moving parts, ensuring reliable performance in the field.


Its compact and lightweight (>2oz) design allows for convenient storage in backpacks, vehicles, and emergency supply kits.

How It Works

the pureflow water filter straw uses mechanical microfiltration to remove contaminants without chemicals or power.

 

stage 1 – pre-filter mesh:
captures sand, silt, and larger particles, protecting the internal membrane and extending filter life.

 

stage 2 – hollow fiber membrane (0.01 micron):
water passes through microscopic fibers that block bacteria, protozoa, and microplastics, allowing only clean water molecules to flow through.

 

stage 3 – mouthpiece outlet:
filtered water exits through the top for safe, direct drinking.

 

first use:
draw water through several times to prime the membrane and ensure smooth flow.

Shipping & Warranty

climate-neutral shipping—delivered within 10 business days. 

(please note this does not include our 2-3 days processing period)


secure packaging—reinforced to prevent transit damage.


30-day warranty—try it risk-free. if you’re not satisfied, return it for a full refund.

 

while our components are assembled in china, every unit is inspected and tested before leaving our north american warehouse.

Honest Filtration & Safety

made from bpa-free, fda-approved materials—safe for emergency use.


proposition 65 labeling appears due to california regulations for plastic imports, but our independent & 3rd party lab tests confirm no detectable harmful substances in the finished product.


the filter does not remove chemicals or viruses. for chemical filtration (chlorine or heavy metals), pair it with our carbon+ module, available separately.

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THEM

PureFlow redefines portable water filtration with ultrafiltration precision, verified lab testing, and certified materials built for real-world reliability.

How it compares

Verified 99.9% Bacteria & Protozoa Removal

Filter capacity: 1,800 Gallons

⚠️ 1,000 gallons

FDA-Approved

BPA-Free Materials

⚠️ undisclosed / not tested

Independent Lab Tested

Batch-Inspected for Quality

⚠️ limited / not verified

30-Day Warranty & Support

Don’t Wait For “What If.”

Safe water is the simplest, smartest prep. Put one in every bag today.

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FAQs

Does the straw remove viruses?

The straw filters down to 0.1 microns, which blocks most bacteria, protozoa, and microplastics. While it can reduce some virus-sized contaminants, it’s not rated for full virus removal. For high-risk areas, we recommend using water purification tablets in addition to the straw.

How long does one straw last?

Each straw filters up to 1,800 gallons of water — enough to support one person’s drinking needs for nearly 10 years under average use. Simply replace the straw once water stops flowing.

What bottles is it compatible with?

The straw fits any standard 28mm threaded bottle, such as typical water or soda bottles. It also works with most gravity bag systems.

Does it change the taste of water?

No chemicals are added, so the taste remains natural. It simply removes harmful contaminants without affecting flavor.

Does it have an expiration date?

No. The straw has no expiration as long as it’s stored in a cool, dry place. Just make sure it’s completely dry before long-term storage to avoid mold or microbial growth.

Is it reusable?

Yes! The included flushing syringe allows you to clean and reuse the straw repeatedly. Proper maintenance will extend its lifespan and keep it working efficiently.

Can children use it safely?

Absolutely. The straw is easy to use and does not require strong suction. Children can drink directly from the straw or from a bottle with adult supervision.

What water sources can I use it with?

The straw is effective with most freshwater sources — lakes, rivers, streams, rainwater, and even tap water in regions with questionable safety. Avoid using it with saltwater or industrially polluted water.