The 5 Best Portable Water Filters (Purification Pens)

Best Water Purification Pens

You’re out camping and you need water. There is a stream nearby. So, do you just grab the water, or do you make sure it’s clean? Of course, you will aim to make sure the water is absolutely clean. And how do you do it? With water a portable water filter, also known as purification pens.

Among the smallest and most affordable pieces of purification technology, these pens are superb companions. They’re compact and incredibly efficient, so having one with you is always prudent.

The 5 Best Water Purification Pens:

If you have a need for one, you can check out our list of the best water purification pens, and maybe there will be something there that will catch your eye.

1. LifeStraw Personal Water Filter

LifeStraw Personal Water Filter

Our first item is the LifeStraw water filter pen/straw. Easy to use and highly reliable, this pen has been a favorite among adventurers of all kinds. The pen is simple to use – just pop the cap, put it in the water and start drinking – and that’s it.

The hollow fiber membrane filters out most 99.9% bacteria, protozoa, and viruses, making sure that the water you’re drinking is not in the least contaminated. The pen has a maximum capacity of 1000 liters.

The splendid pen is also quite affordable, and you can find it on for under 20$.

2. SteriPen Ultra UV Water Purifier

SteriPen Ultra UV Water Purifier

Not all purifiers need filters, and SteriPen (you’ll get to see this name often) uses UV light to ensure that your water is clean and safe to drink. The purifier is very powerful, and it removes 99.9% of bacteria, viruses, and protozoa by killing them and disabling their reproduction. In fact, the device is just as efficient as the VitalityStraw water filter straw.

However, SteriPen has a much larger capacity, and it can go for 300 discharge cycles on a single charge, which is close to 15,000 liters purified. The battery is recharged via simple USB cable.

You can find it on for under $100.

3. SteriPen Traveler Mini Water Purifier

SteriPen Traveler Mini Water Purifier

Like we said, you’ll see SteriPen a lot, and their Traveler Mini Water Purifier is a smaller, but equally powerful, iteration of the Ultra UV water purifier. This tiny pen is superbly effective against all the above-mentioned contaminants, delivering the same performance as both the Ultra UV and VitalityStraw. Not only that, but the UV does not leave an aftertaste, nor does it alter pH levels.

The only difference between this pen and the Ultra is that this pen is rated to 3000 liters, as opposed to Ultra’s 15,000.

You can find it on for under $100.

4. Meco Water Filter Straw

Meco Water Filter Straw

Our penultimate product is another straw, this time from Meco. Just like VitalityStraw, this is a highly effective and simple device. It uses a hollow fiber membrane filter that retains up to 99.9% contaminants.

Of course, the device needs cleaning once in a while, and you can do it by simply backflushing. The straw is even more reliable than UV devices, as it requires no batteries. However, it has a lower capacity rating of up to 2000 liters.

The pen is also inexpensive, and normally can be purchased on for under 20$.

5. SteriPen Adventurer Opti UV Water Purifier

SteriPen Adventurer Opti UV Water Purifier

Our last item comes again from SteriPen. This marvelous device uses UV light to destroy all contaminants, making any puddle of water as clean as a mountain spring. Not only that, but the UV light does not leave an aftertaste, nor does it change the pH value or other chemical traits of the water. The device is rated to purifying up to 8000 liters of water before requiring you to recharge it. It also doubles up as a flashlight.

The device costs about the same as other SteirPen products, just under $100 on


Like we said, going camping you’re will need a water purifier with modern purification technology. Luckily for you, we’ve already done the searching or you, and we made this little list of five outstanding water purifier pens. These things are affordable, efficient and safe to use, and no adventurer should go without one. Now, the question is whether you like straws or pretty lights.

The 5 Best Selling Water Purification Pens

For your convenience, the below list shows the 5 best selling water purification pens on The list is automatically updated once a day.

$6.58Bestseller No. 1
Sawyer Products SP128 Mini Water Filtration System, Single, Blue
10,568 Reviews
Sawyer Products SP128 Mini Water Filtration System, Single, Blue
  • Ideal for outdoor recreation, hiking, camping, scouting, domestic and International...
  • High-performance 0.1 Micron absolute inline filter fits in the palm of your hand and...
  • Attaches to included drinking pouch, standard disposable water bottles, hydration...
  • Removes 99.99999% of all bacteria (salmonella, cholera, and E. coli); removes...
Bestseller No. 2
SteriPen Classic 3 UV Water Purifier and 40 micron Pre-Filter bundle.
  • Battery powered Ultraviolet light water purifier that is perfect for travel and...
  • Purifies a half liter of water in 48 seconds or 1 liter in 90 seconds. Simple and...
  • Destroys over 99.9% of bacteria Viruses and protozoa, like Giardia and...
  • Fast safe effective and chemical-free doesn't alter Taste pH or other water...
Bestseller No. 3
SteriPen Ultra Handheld Water Purifier Blue
29 Reviews
SteriPen Ultra Handheld Water Purifier Blue
  • SteriPEN Ultra Handheld Water Purifier Blue
$9.96Bestseller No. 4
American Red Cross Ultralight Purifier RCP-MP-E American Red Cross...
  • SteriPEN ultra-violet lamp destroys over 99.9% of bacteria, viruses and protozoa
  • American red cross ultralight UV purifier quickly purifies 1.0L of water in only 90...
  • Easy to use, one-button operation provides 8, 000 treatments producing up to 8, 000 L...
  • Compact, lightweight at only 2.6 oz
Bestseller No. 5
SteriPEN SP-PF Pre-Filter (for Wide Mouth Bottles)
  • SteriPEN Pre-Fiter removes particulates from water. Use alone or to ready water for...
  • SteriPEN Pre-Filter fits the openings of Nalgene and comparable wide-mouth water...
  • Features a durable 40-micron filter cartridge to remove particulates from water when...
  • Makes purification easy - insert SteriPEN handheld UV water purifier into center of...

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