GUARD-S1 Emergency Water Filter Straw
GUARD-S1 Emergency Water Filter Straw
The GUARD-S1 uses a power-free, lab-tested, 4-stage micro-filtration system to turn rivers, lakes, and rainwater into safe drinking water for your family instantly.
- Works when the power grid fails
- Removes 99.99% of contaminants
- Never expires, backed for life
- Provides up to 400 gallons of clean water
- Scientifically developed & lab-tested
- Ultra-light & portable
LIMITED TIME | EACH PURCHASE INCLUDES:
The Ultimate Survival ebook
Essential crisis skills & self-reliance made simple.
Food Storage Guides & Workbook
Simple checklists to organize food, supplies & storage.
16 Emergency Prep Checklists
Covers everything needed for major emergencies.
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"This filter is awesome, used it on a three day backpacking trip recently. No issues whatsoever. This is something you pray you never NEED to use but a must to keep with you at all times. Easy to carry and super light weight."
Product Description
Product Description
Here is how our shipping process works.
- Processing Time: 1-3 days
- Cost: 100% FREE! Once shipped, you will receive a tracking number for your order so you know where it is at all times.
- Estimated Delivery: Most orders arrive 5-7 business days after being handed off to the carrier.
❄️ HOLIDAY DISCLAIMER ❄️
Due to the seasonal increase in order volume, shipping times may be longer than usual. Please note that Christmas delivery cutoffs have passed. We sincerely appreciate your patience and understanding during this time.
Need Help? If you have any questions about your order, please don't hesitate to contact us and we will respond within 24 hours.
A Life Saving Filtration System In Your Backpack
Everything you need for up to 400 gallons of filtered water. Ready for when you need it most.
What's Inside the GUARD-S1
Click any component to learn more
0.1-Micron Filter Straw
The core of the GUARD-S1. A 0.1-micron hollow-fiber membrane removes 99.99% of bacteria, parasites, protozoa, and microplastics across four filtration stages. Sip directly from the source, screw it onto a bottle, or run it inline with the pouch.
Backwash Syringe
Included syringe backflushes the filter core to clear trapped sediment and restore flow. A quick flush keeps the straw performing and extends its usable life.
Flexible Extension Hose
Food-grade flexible hose lets you draw from shallow trickles, tight crevices, and hard-to-reach sources without struggling.
Collapsible Squeeze Pouch
Fill the collapsible pouch from any freshwater source, screw on the filter, and squeeze for clean water on demand.
Illustrated Instructions
Clear illustrated instructions walk you through setup, drinking methods, and filter care.
Carabiner Clip
Heavy-duty clip attaches the GUARD-S1 to your pack, belt loop, or bug-out bag.
How It Works
Fill From Any Source
Scoop water into the squeeze pouch from any freshwater source — a stream, lake, pond, or even collected rainwater. You don't need to find clean water first. That's the filter's job.
Attach the Filter
Screw the GUARD-S1 filter straw onto the pouch — or onto a standard water bottle. It threads on in seconds, no tools and no setup required.
Sip or Squeeze
Drink straight through the straw, or squeeze the pouch to push water through the 0.1-micron hollow-fiber membrane. No pumping, no batteries, no waiting. Bacteria, parasites, and microplastics stay behind.
Drink Clean Water
Clean water comes through instantly — ready to drink on the spot or to fill your bottles and containers using the extension hose. Safe hydration anywhere, anytime.
Everything you need to know
Frequently Asked
Questions
How does the GUARD-S1 work?
There's nothing to charge, pump, or power. Drink directly through the straw from any freshwater source, or fill the squeeze pouch, screw on the filter, and squeeze — water passes through the 0.1-micron hollow-fiber membrane and comes out clean. You can also thread it onto a standard water bottle or use the extension hose to fill your containers.
What does it filter out of the water?
The 0.1-micron hollow-fiber membrane is designed to remove waterborne bacteria, protozoa and parasites, microplastics, and sediment — to 99.99%. It's built for natural freshwater sources, not saltwater or water contaminated with chemicals, fuel, or heavy metals.
What water sources can I use it with?
Streams, rivers, lakes, ponds, and collected rainwater are all fair game. For the clearest results and longest filter life, fill from the cleanest water available and avoid heavy mud or silt. Steer clear of saltwater and any water you suspect contains chemicals or industrial runoff.
Does it need power, batteries, or chemicals?
None of the above. The GUARD-S1 works on simple suction or a gentle squeeze — no electricity, no batteries, no chemical tablets, and nothing to dissolve or wait on. That's exactly what makes it reliable when the grid is down.
How long does the filter last?
Up to 400 gallons of clean water over the life of the filter, depending on water quality and regular maintenance. Dirtier source water and skipped cleanings will shorten that, so backflushing after use keeps it flowing at its best.
How do I clean and maintain it?
When the flow slows, backflush the filter with clean water using the included syringe to clear trapped particles. Let the filter fully air-dry before long-term storage. That's the whole routine — no replacement parts needed between uses.
How do I store it — and can it freeze?
Store it clean and dry in your kit, vehicle, or bug-out bag. One important note: never let the filter freeze while it's wet — ice can damage the hollow-fiber membrane. Dry it completely before storing it anywhere it might freeze.
What's included in the box?
Each order includes the GUARD-S1 filter straw, a collapsible squeeze pouch, a flexible extension hose, the backwash syringe, a carabiner clip, and illustrated instructions.
What about shipping, returns, and warranty?
Processing time is one to two days, and you should allow five days for delivery. Questions? Reach us anytime at contact@guardsurvivalsports.com.
Haven’t used this item yet but arrived quickly and light weight. Glad to have these for my family in case of an emergency.
Survival
Very pleased
Shipped timely. I haven’t tried them or had water analyzed after using yet.
These are amazing easy to use durable and great quality lightweight filter is great and safe great for camping hiking or just to have on hand.
I haven’t had to use them yet, but I’m glad I have them just in case
Everyone should have one with an unexpected emergency
It works well in an emergency
Due to world issues figured these would be a possible need.
Easy to pack away or carry. Have not used yet seems easy