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6L Gravity Water Filter Straw

(20 customer reviews)


The gravity filter water can remove milk fat, microplastics, odors, iodine, chlorine, and heavy metals. The portable gravity filter, 6L capacity, is the best for group camping, which can provide you with reliable and enough pure drinking water at any time and anywhere

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Table of Contents



6L Gravity Water Filter Straw

Product Overview

The Wakiwaki 6L gravity water filter straw is really suitable for group travel which is proved by a survey. It can provide you and your companions with enough pure drinking water at any time and anywhere, especially in an emergency.

Product Features

Color: Blue
Filter Pore Size: 0.1μm ceramic membranes cartridge
Filter Capacity: 5,000 liters( 1320 gallons)
4-Stage: Hollow Fiber Ultra Membrane, Activated Carbon Filter, Double PP Cotton Fiber
Features: Removes over 99.99999% Bacteria, Parasites, and micro-plastics; Reduces
Turbidity, and heavy metal; Adsorbs chlorine, VOCs, odors; etc.

Product Advantage

1. 4-StageFilter cartridge to ensure water quality and safe

Detachable Water Filter Straw

Hollow fibers

  • 1-micron average pore size
  • 99.9%  protozoan parasite removal
  • 99.99%  micro-plastic removal
  • 99.999%  bacteria removal
  • Inside-out filter

Activated carbon

  • 5 microns average pore size
  • Chlorine, VOCs, harmful chemicals removal
  • Odor reduction
  • Taste improvement

PP cotton

  • 2 microns average pore size
  • Interception of particles
  • Terminal protection

2. Superior Backwash Solution

  • The detachable mouthpiece connects with the common bottle for backwashing, no need for an extra syringe.

3. Portable to Carry

  • No cumbersome fittings and lightweight. Easy carrying gravity water filter when putting all the parts in the storage bag.3.2 Ounces

4. Extra-Large Capacity Gravity

  • Based water purifier with a 6L extra-large capacity, it’s the professional solution for group outdoor water needs. Our water filtration survival system makes sure you will always have access to enough reliable sources of pure drinking water any time anywhere, especially in an emergency.

5. Versatile Use Ways

6. Safety and Environmental Protection

  • Our gravity water filter straw system camping meets FDA, food-grade, and BPA-free. EPA Est No. 97260-CHN-1

7. Easy to Use(Hang on the trees)

  • Hang on the trees, the adjustable tree strap fits the most trunks, minimum length: 22.5 inches and a maximum length: 41.5 inches. No worry about dropping down, thanks for the one-piece design; or hang it on your backpack to keep you can drink water any time. Besides, our water filtration system camping meets with FDA, is food-grade, and is BPA-free. EPA Est No. 97260-CHN-1

Product Application

Water Supply for A Group of People

6L Gravity Water Filter for Camper

Connect and hang from the water bag, it becomes a water filter bag, and then it can take the advantage of gravity to filter water and fill a water container for a group of people.

Outdoor Survival Water Filter Straw

6L Gravity Water Filter Versatile Use Ways as You Like

Draw in the surface water directly from the water source you can get. It can be used for emergency use.

best backpacking gravity water filter

6L Gravity Water Filter Easy to Hang on Tree

Lightweight and easy to disassemble, it is a piece of good survival equipment and camping hiking emergency preparation equipment

Product Parameter

Model 6L Gravity Bag Water Filter
Hollow Fiber Polysulfone
Glue Polyurethane
Tube Body PE
Other Parts PE
Filter Capacity 5000 Litters
Item Package Dimensions 10.63 x 4.06 x 2.44 inches
Item Weight 0.33 Kilograms
Filter Type gravity water filter
Hollow Fiber EFA 2000 cm2
pore size 0.1 μm
Activated Carbon AC amount 2 g
iodine value 1100 mg/g
E.coli Removal Reduction >99.9999995%
LRV >8.31
Turbidity Removal Reduction >99.80%
Flow Rate Pressure 20 kPa
temperature 25 ℃
flow rate >2000 mL/min

Package Includes

Water Gravity Bag with Tree Strap; Water Filter Straw; Storage Bag; Retail Box; Connector for Special Bottle; Food-grade Silicone Tube; Shut-off Clamp; User manual

Shipping & Warranty Policy

Shipping Policy

Shipping Policy

Notes: The package can be delivered where accepts our standard shipping.

P.O. box as the shipping address is generally not accepted. If you mistakenly filled with the P.O. Box, you may receive our email requiring an updated street address.

Shipping Fee: Free shipping order $59+ (shipping fee $5.99 under $59)


Warranty Policy

Wakiwaki’s 2-Year Limited Warranty Policy applies to all eligible products that are manufactured by Wakiwaki (each, a “Product”), whether such Products are purchased from Wakiwaki or from one of our authorized retailers or resellers. In addition, Wakiwaki offers an Extended Warranty Policy, which may extend warranty coverage on all such Products.


Details see in the links:

Why Choose Us

Why Choose Us

Why Choose Us

  • We are a manufacturer: We have senior engineers and experts in the water filtering area. We’re focusing on water purifying research and development for more than 10 years.
  • Quality Guarantee: Our outdoor water filter products have proudly passed ISO9001, CE, FDA, and NSF certification early in 2013
  • After-sale service: Wakiwaki offers a 2-year limited warranty (“Warranty”) on all eligible Products

Warm Tips

  • Should be clear that it’s not the more filtering layer a filter straw has the better filtering efficiency it does. As a continuous process, filtration follows from large to small. Each layer of filtration needs to be able to stably remove the target substance, protect the next layer of filtration layer, make the effluent quality meet the design requirements, and ensure the total filtration capacity. Too many filtration stages may result in too high differential pressure, and some filter layers may not be fully utilized.

Reviews (20)

20 reviews for 6L Gravity Water Filter Straw

  1. Mike Brown

    Life saving for my son and friends after kayaking for 14 hours and close to dehydration.

  2. Seanchai

    I got this last minute for a camping trip. I have used many filters before. This one is incredible! It’s ass lickin’ good. I thought it would be a cheap replacement gravity filter that is “just good enough” for an emergency replacement. It has exceeded all of my expectations. It is built really well and tastes great. I will make a YouTube video about it eventually… Its that good!

  3. Jenn Butterfield

    It¡¯s durable and easy to use. Exactly as expected. Would recommend and would buy again.

  4. Alex

    I took this on a backpacking trip. It wasn¡¯t great while backpacking. However, as soon as we got to camp I¡¯d fill the reservoir up and hang it in camp. It was a huge hit since we could easily fill our bladders, make dinner, and make coffee without going down to the river and pumping. My friends didn¡¯t mind pumping a little water for me during the hikes. After the first night, I would fill the bag the night before so that the outside would dry before stuffing it in my pack. However, it¡¯s not terrible if the bag is a little wet. I¡¯ve been missing that cold river water.

  5. Kevin Davis

    Excellent product for filtration. One thing you have to have is water so be prepared! Priced well and it is made from a durable material. Well done and a must have in the arsenal, especially camping and off grid. Like the headline says, this filter works very well and it’s much cheaper than most reasonable alternatives. The flow of water was a bit slower than I was hoping for, and slower than other filters I’ve used, but it was fine.Nine of us just got done using this filter during a week in the Rocky Mountain backcountry. 🙂

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Q: What should I notice before using the gravity bag water filter?

A: You should detach all the parts of the gravity bag water filter from both ends, and then rinse all the parts under the tap. Or you could wet the gravity water filter straw under the tap without detaching it. Wet the inside of the straw can make the water flow through it when you use our gravity water filter system.

Q: Can the filter be replaced? If so, where can I buy the replacements?

A: Yes, when no water flows out from the gravity filter water even though backwash a couple of times, you should replace the filter. Search the ‘water filter straw replacement’ on Wakiwaki and it is the replacement of the filter.

Q: How often do I need to backwash the water filter gravity bag?

A: When the flow rate slows down, it is better to backwash. We suggest that you always use the best freshwater source, also backwash after each use to extend the lifetime.

Q: What situations does this gravity filter water fit?

A: Hiking, camping, domestic and international travel, emergency preparedness (tornadoes, rainstorms, earthquakes, floods, etc.) Please note: it can’t filter salt water.

Q: Does the gravity water filter system work?

A: Yes, the bag gravity water filtration system is effective and efficient. Our gravity water filter straw made up of 0.1-micron hollow fiber ultrafiltration membrane, 5-micron coconut shell GAC filter, and 0.2-micron PP fiber filter, removes over 99.99999% back, heavy metal, chlorine, odors, micro-plastics, etc.


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