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Water Filter Straw for Camping, Hiking, Travel, Survival and Emergency Preparedness by Waterdrop


58 reviews


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  • [Superior Performance] Waterdrop filter straw adopts a 0.1-micron hollow fiber membrane, could effectively remove most of the harmful substances in water.
  • [Premium Materials] The use of high-grade coconut shell activated carbon fiber improves odor and taste, ensures the safety of water, and delivers a better drinking experience. Drink from rivers, streams, ponds, lakes, and glaciers without worry.
  • [Versatile Uses] The double-sided removable cap is designed for different uses. One Waterdrop water filter straw can achieve multiple water filtration functions. Use with water bags or connect to water bottles to filter water for drinking.
  • [Outdoor Water Needs] Fulfill all your outdoor water demands: hiking, camping, domestic and international travel, emergency preparedness (tornadoes, rainstorms, earthquakes, floods, etc.) to meet the emergency water demand in a variety of situations.
Φ1.38 inches*7.09 inches
Filtration capacity: 
100,000 gallons
Filter media: 
Ultrafiltration membrane
Activated carbon fiber
Pre-filter fabric
Pre-filter fabric
  • Reduces contaminants from the wild, such as stones, leaves, etc.
Hollow fiber membrane
  • Intercepts 99.99% of bacteria.
Activated carbon fiber
  • Improves the smell and taste of water sources.
Post polyester membrane
  • Reduces rust, sediment, particulates, and other impurities.
Smaller pore diameter
  • The smallest bacteria known in the biological world has an average length of 2 microns and a width of 0.5 microns. The filter straw adopts a 0.1-micron hollow fiber membrane to remove most of the common bacteria and protozoans in water.
Smaller pore diameter
Multiple ways to use
Multiple ways to use
  • A filter straw can accomplish all of the functions of other personal water filters because of the variety of ways it can be used. It can be used with water bags or connected to water bottles to filter water for drinking. Both ends can be disassembled and connected to water bags or water bottles, offering you clean drinking water anywhere you want.
Easy to clean
  • No need for additional tools. Flush the filter straw with clean water through either a water bag or a compatible water bottle.
Multiple ways to use
Meets various outdoor water needs
Meets various outdoor water needs
  • Suitable for outdoor entertainment, hiking, camping, domestic and international travel, and emergency preparedness (tornadoes, rainstorms, earthquakes, floods, etc.); meets emergency water needs in various situations.
Compact design for convenient use
  • The filter straw’s compact design makes it easier to carry, and it can provide up to 100,000 gallons of safe drinking water. It is easy to drink water with a filter straw and to quench your thirst instantly.
Compact design for convenient use
How much water could the filter straw purified?
The filter straw can provide safe drinking water up to 100,000 gallons.
What are the dimensions of the bare filter?
The length of the filer is 180mm and the diameter is 35mm.
What contaminants does the water filter straw remove?
Waterdrop filter straw adopts a 0.1-micron hollow fiber membrane, could effectively remove most of the harmful substances in water, from large particles to extremely tiny particles effectively to ensure the safety of the water.
Which kind of bottle can be matched with the Waterdrop water filter straw?
The filter straw is matched with pop bottle with thread diameter of 27.5 mm in design, and therefore it can only be matched with mineral water bottle with thread diameter of 27.5 mm to avoid any leakage.
Can I connect the filter with a hose?
The filter straw can be matched with hose with thread diameter of 27.7mm.
Does this comes with water bags?
Yes, the filter straw comes with one white water bag for filtered water.
Dose this comes with gravity water bag for raw water?
No, this set only includes a white water pouch for filtered water, if you also need a gravity water bag, please check WD-FSBUL or WD-GWB
Can I use this filter straw to filter saline water?
No, the filter straw can be used to filter fresh water rather than saline water.
Can I use the portable water filter for camping?
Yes, sure. The filter is designed for outdoor use like hiking, camping, domestic and international travel, emergency preparedness.
Can I use the water filter straw for survival?
Yes. It can meet your water demand in various situations like tornadoes, rainstorms, earthquakes, floods, etc.
I have used the personal water filter straw only once and it no longer works, why?
If the straw is not cleaned up after use, the filter element will be blocked. It should be repeatedly backwashed to remove impurities on the surface of the ultrafiltration membrane.
Why is there peculiar smell in the second use of my portable water filter straw?
After use, dirty residues are left in filter element. Please backwash the filter straw to remove dirty impurities on the surface of the filtration membrane. Each time before using, it should be backwashed to avoid peculiar smell.
Customer Reviews
4.7 Based on 58 Reviews
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Filter Reviews:
Muskokan S.
Good, affordable filter for small scale, portable filtering of clear water

This water filter works in a variety of ways, including as a straw or an inline filer with pump. Thankfully bought and brought along as a backup, it got a family of 3 through a canoe trip when our regular filer let us down. Filtering enough water took time and patience, but worked fine, in that no one got ****** Fever! It woks better as a straw, to filter clear water for one person, especially on a day trip, paired with a basic mug. Well worth the money, as long as you don't expect to filter a lot of water. It arrived well packages and very quickly.

Jerry C.
Works but some nuances

Use the Waterdrop Filter Straw while on a backcountry hike in the Smokey Mountains and it works pretty well! There are couple of annoying issues, first using it as a gravity filter from source container to another doesn't really work. In the picture I had to squeeze the water source bottle in order for it to filter through. When bottles like this I had to make sure the collection bottle was squeezed in to remove as much as air as possible to get water to filter through. Once air and water had passed through I would again have to squeeze and remove air to get more water to pass through. Maybe adding vent hole to collection bottle somehow would eliminate this air pressure issue.Secondly, if you're using bottles like this it's a good idea to remove the remaining plastic ring that remains after taking the cap off. Found this little ring prevented from creating a tight seal and water would leak on the supply side.Using the filter straw as a straw worked great whether attached to bottle or directly in stream. For drinking directly from stream would be nice to have a bit of tubing to stick into water source without having to bend over, especially when you're wearing a heavy backpack.

great product, great price

works great. I put fine ash in hot water and then filtered it through this and it came out crystal clear and tasted good after cooking. I've used it on a handful of outings in the woods on some less than ideal looking water and haven't gotten sick or had complaints about flavor from friends. great value

Paille filtrante

Utilis�� (si besoin) quand je vais en nature, si manque d'eau

D.X. Zhang
Quick and Effective Filtering

My order package comes with 3 personal water filters (Waterdrop brand), each individually wrapped and sealed. I opened one to test it. The filter measures 7 inch long and 1 1/4 in diameter. There is a plastic water bag for each filter. There is a cap on each end of the filter. I can use filter tube as a straw to drink filtered water directly from the source, or I may use the water bag to fetch water from the river, and attach the bag to the inlet end of the filter, and get the clean water from the outlet end. It works as described, and it is quick. The description says it can provide safe drinking water up to 100,000 gallons, that's a lot. This product is an essential survival kit for emergency preperation.