Effortless Pure Hydration

Enjoy safe, crystal-clear drinking water wherever adventure takes you.

Engineered for British campers, hillwalkers, bushcrafters, and home emergency preparedness, Gravioxy transforms wild freshwater into crisp, drinkable water with complete ease. Featuring a medical-grade 0.01μm hollow-fibre ultrafiltration membrane and a durable 10-litre food-grade reservoir, you simply fill, hang, and let gravity do all the work—no batteries, power cords, or manual pumping needed.

Before

Without Gravioxy

  • Hesitating to drink from UK streams and lochs due to fears of contamination and waterborne bacteria
  • Wasting energy repeatedly pumping tiny hand filters just to fill a single water bottle
  • Weighing down rucksacks with heavy, bulky plastic water bottles on long trail days
  • Unprepared for sudden mains water contamination alerts or boil-water notices at home
After

With Gravioxy

  • 99.9999% claimed bacterial reduction ensures clean, refreshing hydration from natural freshwater
  • Generous 10L reservoir provides continuous water for families and expedition groups
  • Ultra-lightweight ~500g foldable design rolls up small for effortless rucksack storage
  • 100% gravity-powered operation delivers effortless hands-free water purification anywhere
0.01μm Ultrafiltration Membrane
99.9999% Bacteria Reduction
10L Family-Sized Capacity
500g Ultra-Lightweight Build
Advanced Purification Engineering

High-Performance Gravity Filtration Designed for Total Self-Reliance.
Durable, food-grade, and built for demanding British outdoor conditions.

0.01μm Hollow-Fibre Ultrafiltration Membrane

0.01μm Hollow-Fibre Ultrafiltration Membrane

Drink with complete confidence from freshwater sources. The high-precision 0.01μm hollow-fibre membrane effectively intercepts bacteria, micro-contaminants, and suspended silt, achieving a claimed 99.9999% bacterial reduction for pure, great-tasting water.

  • Removes 99.9999% of bacteria and suspended micro-particulates
  • Reduces cloudiness, river sediment, and gritty organic material
  • Multi-stage design with washable ceramic element for extended lifespan

Generous 10L High-Capacity Food-Grade Reservoir

Never run short of clean water at camp. The heavy-duty 10-litre reservoir bag easily holds enough water for drinking, group cooking, and washing up without constant return trips to the stream.

  • Large 10L volume caters effortlessly to families and trekking groups
  • Crafted from durable, taste-free, food-grade TPU materials
  • Wide opening allows for quick, effortless filling directly from streams or lochs
Generous 10L High-Capacity Food-Grade Reservoir
100% Gravity-Powered Hands-Free Operation

100% Gravity-Powered Hands-Free Operation

Purify water while you relax or set up camp. The clever gravity-fed mechanism requires zero batteries, no mains power, and zero tiring hand pumping—simply hang it up and let natural gravity do the work.

  • Completely off-grid ready with no electricity or batteries required
  • Smooth continuous flow through the included food-grade hose
  • Integrated shut-off clip gives you complete control over water dispensation

Compact, Packable & Lightweight (1.1 lb / 500g)

Built for mobility and easy packing. Gravioxy folds down to a compact 22.1 × 20.1 × 7.9 cm bundle that slips effortlessly into your rucksack, glove box, or emergency grab bag.

  • Weighs only approx. 500g to minimise pack fatigue on long hill climbs
  • Rolls up tightly into its dedicated breathable storage carry bag
  • Includes scouring pad and maintenance kit for easy field cleaning
Compact, Packable & Lightweight (1.1 lb / 500g)
Effortless Setup

Clean, Safe Water in 3 Simple Steps.

No complicated tools or strenuous pumping needed. Gravioxy provides fresh, filtered water anywhere in minutes.

1

Fill the Reservoir

Scoop freshwater directly from any river, lake, or stream into the wide-mouth 10L food-grade reservoir bag.

2

Hang & Connect

Secure the reservoir to a tree branch, tent pole, or hook using the reinforced hanging strap, and attach the filter hose.

3

Enjoy Pure Water

Open the flow valve and let gravity instantly filter crisp, purified water into your drinking bottles, billy cans, or cups.

Order Your Gravioxy Filter Today
Water Filter Comparison

Why UK adventurers choose Gravioxy over standard filtration gear.

Standard personal straw filters force you to drink directly from murky water sources, whilst bulky hand pumps tire your arms and break easily. Gravioxy combines high-capacity 10L hands-free gravity filtration, medical-grade 0.01μm ultrafiltration, and an ultra-packable design in one complete kit.

Swipe to compare
Key Feature
Gravioxy Gravity System TOP RATED UK WATER FILTER
Standard Straw Filters
Manual Pump Filters
Filtration Method Hands-Free Gravity Feed Direct Sucking / Straw Tiring Manual Hand Lever
Water Reservoir Capacity
Pore Size & Ultrafiltration 0.01μm Hollow-Fibre Membrane 0.1 - 0.2μm basic screen 0.2μm standard ceramic
Group & Family Suitability
Bacteria Reduction Rate
Pack Weight & Portability
Effort & Power Required Zero effort (100% gravity-powered) Continuous strenuous suction
Off-Grid Dependability 100% self-reliant, durable TPU build Impractical for cooking or bulk water Mechanical levers easily jam or break
Total Investment
£84 (50% Off Promo) £168
£35 - £55 (solo use only) £95 - £140 (heavy & mechanical)
0.01μm Membrane Rating
10 Litres Total Capacity
500g Pack Weight
UK Customer Reviews
4.9 out of 5 /5

Based on 1,280+ verified UK customer reviews

5★
89%
4★
8%
3★
2%
2★
1%
1★
0%
98% Recommend

Based on verified UK purchases

@richard_cumbria
@richard_cumbria
@fiona_devon
@fiona_devon
@alistair_inverness
@alistair_inverness
@claire_hampshire
@claire_hampshire
@edward_norfolk
@edward_norfolk
@gemma_wales
@gemma_wales

Tap to view full size

"Took the Gravioxy on a four-day wild camping trek in the Lake District. We hung it from a sturdy branch next to our pitch, and within minutes had crystal-clear, sweet-tasting water for our brews and dehydrated meals. Absolutely brilliant piece of kit that saved our backs from carrying heavy bottles."

RW
Richard W. Cumbria, UK

"Having the 10L capacity is a game changer for family camping holidays in Devon. No more tedious manual pumping or waiting around. It filters stream water quickly and leaves zero plasticky aftertaste. The whole system folds down so small in my rucksack."

FD
Fiona D. Devon, UK

"Living in the Scottish Highlands, we keep one of these in our household emergency pantry as well as taking it on hillwalking expeditions. The build quality is superb, the gravity flow is fast, and the 0.01μm membrane gives total peace of mind."

AM
Alistair M. Inverness-shire, UK
4.9/5 Average UK Customer Rating
98% Would Recommend to Fellow Hikers
12K+ UK Adventurers & Homes Equipped
24hr Dedicated UK Customer Care

30-Day Complete Peace of Mind Guarantee

Test the Gravioxy Gravity Water Filtration System on your next UK trek, camping trip, or at home for 30 full days. If you are not completely delighted with its filtration performance, ease of use, and rugged build quality, simply return it for a prompt, no-quibble refund.

99.9999% Bacteria Reduction with 0.01μm Ultrafiltration
Dedicated UK Customer Support
Durable, Food-Grade & BPA-Free Construction
Frequently Asked Questions

Got Questions? We Have Answers

Never Worry About Clean Drinking Water with Gravioxy

Join thousands of British hikers, wild campers, and prepared households enjoying effortless, pure hydration anywhere. Order your Gravioxy system today with 50% off and free tracked UK delivery.

Claim Your 50% Off Today
Free Tracked UK Delivery
30-Day Money-Back Guarantee
4.9/5 UK Customer Rating