Fill From Any Source
Fill the gravity bag with water suitable for this filter. Keep the clean-water pouch separate as you prepare the system.
AQUA-GS1 Survival Kit
Your water backup, ready when the tap is not. Portable gravity-fed filtration combines a 0.01-micron membrane and activated carbon, with no mains electricity required.
- Gravity-fed filtration, no electricity required
- 1,500 litres of filtration capacity
- 0.01-micron ultrafiltration and activated carbon
- Compact kit for home, travel and outdoor use
- Flexible pack options for your household
- Easy to store with your emergency gear
Selected pack price: $79.99 USD
Worldwide · Estimated delivery 3–5 days
Product Description
The One Thing Standing Between Your Family and Survival
The human body can survive 3 weeks without food. But without water? Just 3 days.
AQUA puts a practical water-filtration backup in your hands. Its gravity-fed design combines 0.01-micron ultrafiltration and activated carbon in a compact, portable kit, with a filtration capacity of 1,500 litres. Set it up at camp or keep it ready with your household emergency supplies.
See the gear in action
Scroll to explore the videos. Use the player controls to watch.
A Life Saving Filtration System In Your Backpack
Your water backup, ready when the tap is not. Portable gravity-fed filtration combines a 0.01-micron membrane and activated carbon, with no mains electricity required.
Your kit, explained
Seven parts. One portable system.
Explore how each component fits into your water backup.
Gravity bag
The collapsible reservoir holds the water you plan to filter. Hang it above the filter so gravity can move water through the connected system.
- Capacity
- 1 GAL
- Weight Empty
- 6 oz
- Material
- BPA-Free
- Packs Flat
- Collapsible
Filter core
The filtration cartridge sits at the heart of the kit. It combines a hollow-fibre membrane with activated carbon in a portable format that needs no mains electricity.
- Hollow-Fiber
- 0.01 μm
- Removal Rate
- 99.99%
- Filter Life
- 1,500 litres
- Filtration
- 4-Stage
Hose
Flexible tubing connects the reservoir to the filter and the rest of your setup. Keep the connections secure and follow the supplied assembly instructions.
- Material
- Food-Grade
- Flow Control
- Valve
- Design
- Flexible
- Connect
- Quick
Pouch
The collapsible pouch collects your filtered water. Its capped opening makes it a practical part of a compact kit. Keep the collection pouch clean between uses.
- Capacity
- 1 GAL
- Rolls Flat
- Collapsible
- Food-Safe
- BPA-Free
- Easy Fill
- Wide Mouth
Mouthpiece
The hose-mounted drinking attachment uses a bite valve and a protective cap. Fit and use it according to the instructions supplied with your kit.
- Leak-Proof
- Bite Valve
- No Cup Needed
- Direct Sip
- Cap Cover
- Hygienic
- Hose Fit
- Universal
Syringe
The reusable syringe is provided for backflushing the filter. Use it as directed in the care instructions to help maintain the system.
- Quick Flush
- 30 Sec
- Filter Life
- Extends
- One-Hand Use
- Easy
- Unlimited
- Reusable
Hang loop
A hanging strap and carabiner help suspend the reservoir from a suitable support. Position the bag above the filter to set up gravity-fed operation.
- Nylon Strap
- Heavy-Duty
- Clip Included
- Carabiner
- Anywhere
- Hang
- Attachment
- Reinforced
How It Works
Hang it up
Secure the hanging loop to a suitable support. Position the filled reservoir above the filter and collection pouch.
Let gravity do the work
Connect the bag, hose and filter according to the supplied instructions. Gravity moves water through the system without mains power.
Collect your filtered water
Collect the filtered water in a clean pouch or container. Follow the care and storage instructions after use so the kit is ready for next time.
Press Mentions
Frequently Asked Questions
How does the AQUA-GS1 work?
Fill the reservoir with freshwater, hang it above the filter, and connect the hose. Gravity carries the water through the filter into your collection container; no pump or electrical supply is needed.
What does the filter remove?
The 0.01-micron membrane filters bacteria, protozoa, parasites, microplastics and sediment. Activated carbon provides an additional filtration stage. The system is for freshwater, not seawater or water contaminated by fuel, industrial chemicals or heavy metals.
Which water sources can I use?
Use freshwater from streams, rivers, lakes, ponds or collected rainwater. Choose the clearest available source and avoid heavily muddy water, saltwater and industrial runoff.
Does it require batteries or chemicals?
No. Filtration is gravity-powered, with no batteries, electricity or chemical treatment tablets.
How much water can it filter?
The filter capacity is up to 1,500 litres. Regular backflushing clears trapped sediment and helps maintain flow.
How do I clean the filter?
Backflush with clean water using the included syringe when flow slows. Allow the filter to dry fully before long-term storage.
How should I store it?
Store the kit clean and dry. A wet filter must not freeze because ice can damage the membrane; dry it thoroughly before storage in freezing conditions.
What comes with the kit?
The kit includes a gravity reservoir, inline filter, hose, clean-water pouch, mouthpiece, backflush syringe and hanging loop.
How can I ask about shipping, returns or warranty?
Use the Contact page for help with shipping, returns or warranty questions.
Stories from the field
Example reviews: not Doomsday Gear customer reviews
These reference-storefront examples illustrate the review layout. They are not feedback from Doomsday Gear customers.
Lightweight gear for the trail
The reference reviewer reports trouble-free use on a three-day backpacking trip and praises the kit’s low weight and portability.
Reference review summary · Layout example