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Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 0.1 Micron, 5 Stage Filtration, Blue

4.7 4.7 out of 5 stars 2,971 ratings
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Amazon's Choice in Camping & Hiking Water Filters by Waterdrop
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Gravity Water Filter Straw/1
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Purchase options and add-ons

Brand Waterdrop
Special Feature Water Purifier Survival, Gravity Water Filter Straw
Package Information Bag
Power Source Non Electric
Item Weight 4.64 ounces
Model Name WD-FSBUL
Maximum Flow Rate 700 Milliliters Per Minute
Material
Hollow Fiber Ultrafiltration Membrane, Activated Carbon See more
Capacity
1400 Gallons
Included Components
Water Filter Straw *1, 1.5 Gal Gravity-Fed Water Bag *1, 16 oz Water Pouch *1 See more
Purification Method
Hollow Fiber Ultrafiltration Membrane, Activated Carbon See more

About this item

  • 5-Stage Efficient Filtration: With adoption of premium-quality coconut shell activated carbon, 0.1 um ultrafiltration membrane and other raw materials, the Water Filter Straw can effectively reduce harmful substances like chlorine, particulates, sediment, stones, sand, dirt, bad taste &odor in water to ensure the water safety and deliver better drinking experience.
  • Professional Combination: Waterdrop Gravity Water Filter Straw with 1.5 gal Gravity-Fed Water Bag is an exclusive water purification combination created for outdoor activities and first aid survival. The large-capacity water bag can hold up to 1.5 Gallons of water at a time, which is about 11 bottles of 500 ml bottled purified water, and can meet the all-day demand for outdoor water drinking.
  • Longer Lifespan: The Waterdrop Filter straw can provide safe drinking water up to 1,400 gallons (5,300 liters), and ensures the maximum water flow rate of up to 700 ml/min to provide more relaxed outdoor water drinking experience.
  • Recyclable Straw: With innovative backwash purifier function, the inside of the Water Filter Straw can be kept clean at all times and it is recyclable, safe and pollution-free. If the water flow decreases or the filter has been used for a long time, you can remove the mouthpiece, flush it with clean water. (Standard water bag can be used or pop bottle with thread diameter of 27.5mm can be filled clean water for backwashing the filter straw.)
  • Versatile Uses: The Water Filter Straw can be connected with water bags or water bottles to filter water for drinking. Both ends of it can be disassembled and connected with the water bags and the water bottles to offer you clean drinking water anytime anywhere.
  • Warm Prompt: If the gravity bag is used to filter water, turn on the drainage valve first to empty air from the hose before connecting with the straw to avoid no water flow in a vacuum state.
  • Multi-scene Application: As a necessity for outdoor water purification, the Waterdrop Gravity Water Filter Straw is applicable to hiking, camping, domestic and international travel, emergency preparedness (tornadoes, rainstorms, earthquakes, floods, etc.) to meet the emergency water demand in a variety of situations.
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Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 0.1 Micron, 5 Stage Filtration, Blue

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Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Em
$39.79
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Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Em
$45.99 ($23.00/Count)
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Aquatabs 397mg Water Purification Tablets (100 Pack). Water Filtration System for, Camping, Emergencies, Survival, and RVs. E
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Product Description

gravity water filter straw camping backpacking purifier water filtration system survival hiking
gravity water filter straw camping backpacking purifier water filtration system survival hiking
gravity water filter straw camping backpacking purifier water filtration system survival hiking

Model: WD-FSBUL

Capacity:The Waterdrop gravity water filter straw system can provide 1,400 gallons/one straw of safe drinking water.

The maximum capacity can be reached 100,000 gallons by backwashing to purifier the straw.

The Waterdrop gravity water bag can hold up to 1.5 Gallons of water at a time.

5-Stage Filtration: Made from selected filtration materials, the 0.1 um fiber membrane of the gravity water filter straw can reduce most harmful substances in water to ensure the safety of every drop of outdoor drinking water.

Applicable Scenes: Camping, travel, hiking, boating, fishing, rock climbing and biking.

gravity water filter straw camping backpacking purifier water filtration system survival hiking

gravity water filter straw camping backpacking purifier water filtration system survival hiking

gravity water filter straw camping backpacking purifier water filtration system survival hiking

Well-chosen filtration materials

With adoption of high-quality coconut shell activated carbon, the inside filtration layers of the water filter straw have higher adsorption capability, and can effectively remove bad odor and improve the taste; the 0.1 micron fiber membrane of the water filter straw can reduce most harmful substances in water to ensure the safety of each drop of outdoor drinking water.

Smaller frame, bigger capacity

The water filter straw is well-designed and small in size. Each water filter straw can provide 1,400 gallons of purified water at most, accompanying you to enjoy each outdoor activity and providing purified water for you anytime anywhere.

Perfect combination, light weight and portable design

The water filter straw can be matched with the collapsible gravity water bag, thereby perfectly meeting outdoor demands for water filtration and drinking. Meanwhile, the combination weighs only 0.48 pounds and can be directly stored on one side of a backpack without any burden.

gravity water bag camping water filter backpacking purifier water filtration system survival hiking gravity water bag camping water filter backpacking purifier water filtration system survival hiking gravity water filter straw camping backpacking purifier water filtration system survival hiking gravity water filter straw camping backpacking purifier water filtration system survival hiking gravity water filter straw camping backpacking purifier water filtration system survival hiking
Waterdrop Gravity Water Filter Straw Pack of 1 Waterdrop Gravity Water Filter Straw Pack of 2 Waterdrop Gravity Water Bag Waterdrop Collapsible Pouch, 16 oz Gravity Water Filter Straw*3
Customer Reviews
4.7 out of 5 stars
2,971
4.6 out of 5 stars
261
4.6 out of 5 stars
737
4.3 out of 5 stars
181
4.7 out of 5 stars
2,971
Price $39.79 $45.99 $19.99 $14.99 $29.59
Capacity 1400*1 Gallons 1400*2 Gallons 1.5 Gallons 16 oz*3 Count 1400*3 Gallons
Material Tpu, ultra-filtration membrane, activated carbon Tpu, ultra-filtration membrane, activated carbon Tpu BPA free material ultra-filtration membrane, activated carbon
Material Use with water bags or water bottles Use with water bags or water bottles Use with personal water filter straw Use with personal water filter straw Use with water bags or water bottles
gravity water filter straw camping backpacking purifier water filtration system survival hiking
gravity water filter straw camping backpacking purifier water filtration system survival hiking

Product information

Technical Details

Additional Information

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Waterdrop

Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 0.1 Micron, 5 Stage Filtration, Blue

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Product guides and documents

User Manual (PDF)

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Customer reviews

4.7 out of 5 stars
4.7 out of 5
2,971 global ratings

Customers say

Customers like the performance, taste, quality and portability of the water purification unit. For example, they mention it works great, makes all water taste great, the build quality is good, the gravity fill bag held up well and it's light enough to carry around. They appreciate the ease of use, saying it'll filter tap water in a pinch and the provided directions are clear. That said, opinions are mixed on flow.

AI-generated from the text of customer reviews

81 customers mention73 positive8 negative

Customers are satisfied with the performance of the water purification unit. They mention that it works well and provides fast, clean water with ease. They appreciate the filter straw and other connections. Overall, customers are happy with the product's functionality and design.

"...Function and provided fast, clean water with ease. beat any space/weight concerns I had initially...." Read more

"...But this filtration bag worked like a charm! Water was clear and tasted great!..." Read more

"I bought this for a 6-day backpacking trip through Yosemite. It worked well and filled all four of our water bottles the entire time...." Read more

"...It does a good job on it’s own. I also use a secondary Zero Water filter which is very expensive, and this helps that one last longer." Read more

58 customers mention54 positive4 negative

Customers find the water purification unit easy to use. They mention it's easy to set up, convenient, and lightweight. They appreciate the clear instructions and the simplicity of the gravity filtration system.

"This water filter was awesome easy and light weight to carry on a week long trip with my daughter on Isle Royale...." Read more

"...It was easy to use, didn’t take too long & was lightweight for traveling...." Read more

"I really like how easy to use it is, the bag is great quality i definitely recommend it." Read more

"...It's easy to use and the provided directions are clear.About the customer service: The first one I got had a manufacturing defect...." Read more

58 customers mention55 positive3 negative

Customers are satisfied with the value of the water purification unit. They mention that it works great, is of good quality, and is worth the price. Some say that the product is great for emergency use and is awesome for long hikes.

"...heavier than some of the other ultrafiltration options, but it is sooo worth it...." Read more

"love life straw, use them daily, makes all water taste great, great price, quick delivery, would highly recommend and will buy another life straw" Read more

"...Does not include a container to collect the clean water. Good value." Read more

"...been using hand pump water purifiers, this product is such a huge improvement in cost, functionality and effort...." Read more

42 customers mention42 positive0 negative

Customers are satisfied with the filter. They mention that it does a good job filtering the water, and is faster than using a pump filter. Some say that it's simple to use and filters 5 gallons in an hour.

"filtered 5 gallons in an hour. The trick is to the screw on a clean plastic walmart water bottle to the filtered end of the straw...." Read more

"Works very well and filters pretty quick...." Read more

"...But running it through the filter was better, faster and made for cleaning dishes and getting drinking water a snap." Read more

"...The filter specifications sound good, but I drew from clear running water and still boiled to be safe since I don't know this brand...." Read more

40 customers mention35 positive5 negative

Customers like the taste of the water purification unit. They mention that it makes all water taste great, removes the odd taste and smell from pool water, and produces very tasty water.

"...Superior and multiple inland lakes. Never an issue and flavor never a problem. Seemed clearer then the tap from Rock Harbor...." Read more

"...But this filtration bag worked like a charm! Water was clear and tasted great!..." Read more

"...of water through the filter before first use, The filtered water tasted perfectly normal...." Read more

"love life straw, use them daily, makes all water taste great, great price, quick delivery, would highly recommend and will buy another life straw" Read more

33 customers mention33 positive0 negative

Customers find the water purification unit light enough to carry around with them everywhere, perfect for backpacking, and easy to pack away for emergency use. They also say it's an awesome portable filter that tastes great and filters water quickly. Some say it is good for camping in one place but not for backpackers as it would leak in their pack. Overall, customers are satisfied with the portability of the product.

"This water filter was awesome easy and light weight to carry on a week long trip with my daughter on Isle Royale...." Read more

"...It was easy to use, didn’t take too long & was lightweight for traveling...." Read more

"Easy to use. Easy to carry in backpack." Read more

"...It filters very fast, and its compact and light enough to make it worth it. I would recommend it to a beginner or a pro" Read more

25 customers mention22 positive3 negative

Customers like the quality of the water purification unit. They mention that the build quality is good, the bag held up well, and it's reliable. The gravity fill bag is easy to fill and has a self-sealing valve. It's long lasting and easy to use, and the thickness is sufficient to keep from punctures under normal use.

"I really like how easy to use it is, the bag is great quality i definitely recommend it." Read more

"...The taste wasn’t bad and it’s Easy to clean. Build quality seemed good." Read more

"...a process to unpack and set it up, but I like the large volume and long life span. I’ve been finding a tree to strap it to and fill my camelback...." Read more

"...The gravity fill bag also was excellent construction being easy to fill and with a self-sealing valve...." Read more

54 customers mention37 positive17 negative

Customers are mixed about the flow of the water purification unit. Some mention that the water flows great for fast fill up, while others say that it has a really low flow when using the squeeze pouch and the actual filter.

"...beat any space/weight concerns I had initially.Clean, clear water that had no taste issues at all. Pulled water from Lk...." Read more

"...But this filtration bag worked like a charm! Water was clear and tasted great!..." Read more

"...The filter may be on the slow side, but you can squeeze the bag to force it through the filter straw faster...." Read more

"...straw, use them daily, makes all water taste great, great price, quick delivery, would highly recommend and will buy another life straw" Read more

Works great!
5 Stars
Works great!
Not going to lie, when I saw the pre-filtered river water, I was really sketched out. But this filtration bag worked like a charm! Water was clear and tasted great! It did get clogged but we just had to rinse it out and blow through the life straw and that worked like a charm! Very thankful we had this thing-uh-ma-jig. It saved us a ton of room/weight during our canoeing/camping trip!
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Top reviews from the United States

Outdoorjunkie73
5.0 out of 5 stars Great filter, light weight, and flavor/smell never an issue. Kept us safe and hydrated.
Reviewed in the United States on July 6, 2021
Style: Gravity Water Filter Straw/1Verified Purchase
This water filter was awesome easy and light weight to carry on a week long trip with my daughter on Isle Royale. There are only a cpl places on the island to get drinking water off tap, you must have filters to get drinking water when back country.
Packed easily into my bag, and allowed us to carry 2, 24 oz “Smart Water” sport bottles ea. Didn’t even touch our Sawyer Mini filters we’d taken as back up.
Bag opening is easy to fill and close. Only issue, when bag is rolled closed it was not totally leak proof. Awareness to watch for drips into clean water.
The bag/filter when hung, provided full 20 oz bottles in short time, maybe two mins to fill our bottles. Cleaned each day as directed. Remember the bag provided for cleaning! We had no issues at all. Took a little bit of space as it’s a rubber bag with long tube with a filter that is for sure longer than a Sawyer filter. Function and provided fast, clean water with ease. beat any space/weight concerns I had initially.
Clean, clear water that had no taste issues at all. Pulled water from Lk. Superior and multiple inland lakes. Never an issue and flavor never a problem. Seemed clearer then the tap from Rock Harbor.
Awesome product, for sure recommend. Filters are rather large, note the specs given from manufacture. Just be aware of space it does take up. We had no issues even with carrying Swayer minis as back ups. We never used them.
5 nights, 45 miles wandered.
Thanks for keeping us with healthy, clean water.
48 people found this helpful
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katielady47
5.0 out of 5 stars Works great!
Reviewed in the United States on April 13, 2024
Style: Gravity Water Filter Straw/1Verified Purchase
Not going to lie, when I saw the pre-filtered river water, I was really sketched out. But this filtration bag worked like a charm! Water was clear and tasted great! It did get clogged but we just had to rinse it out and blow through the life straw and that worked like a charm! Very thankful we had this thing-uh-ma-jig. It saved us a ton of room/weight during our canoeing/camping trip!
Customer image
katielady47
5.0 out of 5 stars Works great!
Reviewed in the United States on April 13, 2024
Not going to lie, when I saw the pre-filtered river water, I was really sketched out. But this filtration bag worked like a charm! Water was clear and tasted great! It did get clogged but we just had to rinse it out and blow through the life straw and that worked like a charm! Very thankful we had this thing-uh-ma-jig. It saved us a ton of room/weight during our canoeing/camping trip!
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4 people found this helpful
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Amazon Customer
4.0 out of 5 stars Make sure to test ahead of time!
Reviewed in the United States on November 7, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
I bought this for a 6-day backpacking trip through Yosemite. It worked well and filled all four of our water bottles the entire time. It was easy to use, didn’t take too long & was lightweight for traveling. I also really loved the extra pouch that came with it because I was able to clip it on the outside as “just incase” water.

However, I had to order this product twice because the first time I ordered it - the seal wasn’t secure and it leaked. i’m really glad I tested it out before hand. Second, the extra water pouch it comes with did rip right where it attached to the clip and ripped the whole bag making it useless. I would recommend this product but handle with care and make sure it’s properly functioning before taking it out.
28 people found this helpful
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Maria
5.0 out of 5 stars Awesome product
Reviewed in the United States on April 16, 2024
Style: Gravity Water Filter Straw/1Verified Purchase
I really like how easy to use it is, the bag is great quality i definitely recommend it.
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RockinBiker
5.0 out of 5 stars Good water filter
Reviewed in the United States on April 14, 2024
Style: Water Filter Straw/oneVerified Purchase
I’ve been using this filter at home and at work for over a year now. It does a good job on it’s own. I also use a secondary Zero Water filter which is very expensive, and this helps that one last longer.
One person found this helpful
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Craig Barshinger
5.0 out of 5 stars Excellent customer service!
Reviewed in the United States on August 25, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
I love this product because it has a 1.5 gallon bag that is easy to fill in one second from a lake, pond, river, spring. It's a few ounces heavier than some of the other ultrafiltration options, but it is sooo worth it. After all, at camp you are going to need more than 32 oz of filtered water per day! 1.5 gallons is much more reasonable, and you only have to fetch water once per day. You just scoop up 1.5 gallons, roll the top shut, then sling it over your shoulder as you walk back to camp. Then the water gravity feeds from the bag, through the filter, into either the provided drinking sack, or any container you provide. It's easy to use and the provided directions are clear.

About the customer service: The first one I got had a manufacturing defect. the little gray plastic elbow that connects the 1.5 gal bag to the hose was blocked, probably due to flashing left over from the manufacturing process. I emailed Waterdrop Filter and they sent me a new one immediately and without hassle. This was wonderful. (I failed to try out the product prior to backpacking, and so discovered the blockage on the trail. Note to self: always try out gear at home before setting out.)

This is the kind of customer service that makes me a fan. Sure, there will be problems. But when a company stands behind its product, I stand up for the company.

I contrast this customer service with another Amazon purchase from a well-known company that sold a bladder that had a manufacturing defect. I wrote them a detailed email. Got an auto-reply promising 3-5 day response. About 9 days later I got an email, telling me to fill out a warranty claim form, etc, etc. The reply didn't even address the diagnostic data I provided. My confidence in the product sank. What did I do? I returned the product to Amazon. Thank goodness for the 30-day Amazon return policy!

But back to Waterdrop: They stood behind the product and supported it. In this day and age of increasingly high technology, product support becomes as important as the product itself.
30 people found this helpful
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Chris Guthrie
5.0 out of 5 stars Does exactly what it says on the bag!
Reviewed in the United States on October 30, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
Worked like a champ! I bought this because I found myself making multiple trips to the river to fill up Nalgene bottles, So it serves as a water storage bag (for washing/cleaning utensils) as well as filtering. Packs away into practically nothing and I used the main water bag to store the filter, hose and mini bag when storing it in the backpack.

In terms of ease of use, the included strap comes in handy when you're carrying a full bag back to camp and you can use the same strap to attach the system to a tree. After running a few bottles worth of water through the filter before first use, The filtered water tasted perfectly normal.

Up until now, I've always used my Katadyn Hiker pro, but this is a great option if you want the storage capacity and filtration system all in one! Comes highly recommended!
19 people found this helpful
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Tammy Ward
5.0 out of 5 stars great product
Reviewed in the United States on January 20, 2024
Style: Gravity Water Filter Straw/1Verified Purchase
love life straw, use them daily, makes all water taste great, great price, quick delivery, would highly recommend and will buy another life straw
One person found this helpful
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Top reviews from other countries

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Hector
5.0 out of 5 stars Muy rápida la entrega
Reviewed in Mexico on October 8, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
Muy buen producto, todos deberíamos tener este equipo como emergencia y para el campo
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Joelnoela
5.0 out of 5 stars It works and it works fast.
Reviewed in Canada on July 16, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
I have been looking for a great balance between price and quality and this filter hits the spot. The water quality that comes out of the filter is outstanding. Tastes great and is clear. The benefits of the carbon stage is underplayed in the marketing. My only two issues I have are the size of the bag and the outflow connection options.
I would have like to see a 6 to 7 litre bag so you could get a little more water in and still roll the top closed.
I appreciate the mouth peice/straw style outflow on the filter so it could be used as a straw but I would prefer something with hose that you could create a cap for filling Nalgeene or standard water bottles.
One person found this helpful
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Amazon Customer
4.0 out of 5 stars Worked well.
Reviewed in Canada on July 4, 2023
Style: Gravity Water Filter Straw/1Verified Purchase
Used the filter on a motorcycle trip recently and it worked well. Very easy to use and considering none of us had any intestinal issues after drinking water run through the filter I’d say it did what it is supposed to do. Light weight and the filtered water flow is surprisingly fast. Would recommend.
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Will
5.0 out of 5 stars Works perfectly, very good
Reviewed in the United Kingdom on April 25, 2024
Style: Gravity Water Filter Straw/1Verified Purchase
Used it on water from rainforest streams and loads of Madeira levadas (likely drinkable already) all people had zero stomach issues the whole trip, worked well decent flow rate and easy to back wash. 5 day thru hike of ultra marathon trail.
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Kindle Customer
5.0 out of 5 stars Works great
Reviewed in Canada on April 1, 2024
Style: Gravity Water Filter Straw/1Verified Purchase
Got this for my boys. They are big into camping. They used it one week for camping and they said it works really well. Made a big difference in the lake water They were filtering.
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