Man drinking water

The Best Water Purifiers for Travel in 2020

By Dave Dean Accessories, Top67 Comments

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It’s only when you’ve been traveling for a while in countries with unsafe water that you truly appreciate being able to drink what comes out of the tap back home.

Sure, you can usually buy bottled water cheaply in those countries, but you’re not always sure where it came from. The environmental impact of plastic bottles is also hard to ignore when you see them washing up on the beach around you.

Water purifiers can give you the best of both worlds: clean, safe water on demand, without destroying the environment in the process. They’re a varied lot, though, and picking the wrong one can leave you with foul-tasting water and major stomach problems.

You’re looking for something that will kill bacteria, cysts, and viruses. It’s the last of those in particular that many devices won’t destroy.

At a minimum, you need something that won’t make the water taste worse than it already does. Ideally, it should also filter out particulates, chlorine, and metals so that the water tastes better than when you started.

Finally, it needs to be appropriate for travel: light, robust, and reliable, at a price that won’t break the bank. There aren’t many that fit the bill, but luckily there are a few. Here are six of the best water purifiers for travel (or daily life) right now.

Steripen Ultra

SteriPEN ULT-MP-EF SterPen Ultra UV Water Purifier

Probably the most well-known portable water purifier, the various models of Steripen use a UV lamp to kill the bugs and bacteria. You just dunk the lamp into a cup or water bottle, stir for a minute or two, then drink. It’s a straightforward and inexpensive process, but it does have some limitations.

Firstly, it only purifies: there’s no filtering mechanism. This means you can’t use cloudy/dirty water with it, and while the treated version is unlikely to make you sick, it won’t taste any better than when you started.

The reliance on battery power also isn’t ideal, although at least this Ultra model charges via USB. Cheaper versions use hard-to-find disposable batteries, which is the last thing you need when you’re in the middle of nowhere.

While it’s good to be able to purify water in any vessel, I’d rather carry a bottle with a UV lamp built-in like the Crazy Cap (below). That way I could purify when necessary, and just use it as a normal water bottle the rest of the time.

Still, if you only want a small, lightweight purifier and the water you’re using is reasonably free of dirt and minerals to start with, the Steripen Ultra is a simple and effective option.

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Microlyscs CrazyCap UV Water Purifier Cap and Insulated Self Cleaning Water Bottle - Turns Any Water Source Into Clean Drinkable Water - 17 oz

Despite the silly name, the CrazyCap is a stylish and effective water purifying bottle with a couple of tricks up its sleeve. Like the Steripen, it’s UV-powered. This means it does a good job of killing bacteria, cysts, and viruses in clear water but won’t purify cloudy or dirty water, heavy metals, or other physical contaminants.

The UV lamp is built into the cap, which has a universal screw top for attaching to any bottle with a similarly-sized neck. This lets you use the CrazyCap to purify water in bottles other than the one it comes with, handy if you have a favorite water bottle already.

If you do use the company’s stainless-steel bottle, though, you’ll benefit from its insulation. It’ll keep drinks cold for up to 24 hours, or hot for up to eight hours. The bottle and cap combined weigh a bit over 12 ounces (350g).

Using the CrazyCap is about as simple as it gets: fill the bottle, screw on the cap, and tap. Two taps starts the standard one-minute purification process, while five taps enables “crazy” mode, an extra-strength two-minute purification.

You don’t need to do anything else except wait, making this one of the most straightforward purifiers we’ve come across. The cap also automatically activates for 20 seconds every four hours, to help kill mold and bacteria and prevent the bottle from smelling.

Speaking of the cap, you can also use it to sterilize surfaces and other small items you’re traveling with. Toothbrushes are the obvious example, especially if you’re using or storing it in unhygienic conditions.

The charger fits over top of the cap and uses a standard USB cable. The battery should last at least a week of normal use, and recharges in a few hours. Being able to do this from a portable battery or solar charger is handy for camping and hiking trips where mains power isn’t available.

Available in a range of colors and designs and rated to last half a million cycles, the CrazyCap is one of the best water purifiers we’ve come across for cleaning clear water.

Drinksafe Travel Tap

Drinksafe Travel Tap

There are several different models of purifier in the UK-made Drinksafe range, but my preference is the “Travel Tap” for one simple reason. As well as sucking water through the filtering/purification mechanism like the other models, you can also use the Travel Tap by gently squeezing the bottle.

This simple change greatly increases its usefulness, letting you do things like rinse your toothbrush and irrigate wounds with clean water.

I also like that you can remove the filter mechanism if you know the water is safe, meaning you don’t use it up unnecessarily. A lanyard and insulation sleeve are included in the package.

The Travel Tap has an 800ml capacity. It can purify up to 1600 liters of water before the auto-shutdown mechanism kicks in and the filter cartridge needs replacing. That’s pretty good: if you’re drinking two liters a day, it’s over two years of daily use.

Water flow is around 300ml/minute. That’s fine most of the time, but perhaps a little frustrating if you’re particularly thirsty.


LIFESAVER Water Filtration Filter Bottle Purifier kit for Camping Emergency prep Backpacking Hiking Outdoor System Travel Virus Bacteria & Cyst Removal Bottle 4000UF

The LifeSaver was originally developed to provide clean water to people in developing countries who wouldn’t otherwise have access to it, and it shows in the design.

It’s a simple piece of equipment that’s easy to use, reasonably robust, and lasts a long time without needing maintenance. That makes it equally useful for travelers as well.

It’s relatively heavy, at around 22oz (625g) when empty, so may not be for you if you’re an ultra-lightweight traveler. The purification cartridge lasts for an impressive 4000 liters before needing replacement, and there’s also a model with a 6000-liter limit.

You’ll need to replace the carbon filters more frequently, though. Depending on how dirty the water you’re using is, it’ll be roughly every 250 liters.

Filtering of the 750ml capacity takes under a minute, which compares favorably to many other approaches. The failsafe filter and cartridge mechanism won’t let you pump water after they’re used up, which is a much better approach than trying to remember how much water you’ve used, or using your stomach as a petrie dish to find out.

That the LifeSaver functions just like a normal water bottle is also very handy. It lets you tip the water into something else to let you rinse out a cut, cook, or brush your teeth with it.

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GRAYL Ultralight Purifier Bottle

GRAYL Ultralight Water Purifier [+ Filter] Bottle (Camo Black)

There’s plenty to like about the GRAYL Ultralight. Rather than using a straw or manual pumping mechanism, this purifier works more like a coffee press. You fill the bottom part up with water, attach the top part, and press down.

Thirty seconds later, you’ve got up to 16oz (just under 500ml) of clean water in a stylish container. It’s super-simple and reliable, and the filter eliminates pretty much everything including viruses.

So what don’t I like? Well, a couple of things. The capacity is a bit low: at less than half a liter, you’ll get through it quickly in hot countries. Of course, being able to fill it up again from almost any water source negates that problem somewhat, but not entirely.

If you need the extra capacity, you can opt for GRAYL’s Geopress model instead. It works in much the same way, but purifies 24oz (710ml) of water at a time. The trade-off? It’s bigger and heavier.

Secondly, it’s more expensive for lengthy trips than some of the other options. The filter only treats 150 liters of water before it needs replacing, assuming you can find one wherever you happen to be. I’d suggest taking an extra filter from home if you’re likely to need one.

Overall, though, the GRAYL Ultralight is an effective and easy-to-use water purifier that’s ideal for trips up to a few weeks long. We’ve used it extensively during our travels, and it hasn’t failed us yet.

Survivor Filter Pro

Survivor Filter PRO - Virus and Heavy Metal Tested 0.01 Micron Water Filter for Camping, Hiking, and Emergency. 3 Stages - 2 Cleanable 100,000L Membranes and a Carbon Filter for Family Preparedness

While it’s really aimed more at hikers and back-country campers, the Survivor Filter Pro works well for travelers as well. At just over 8oz (230g) it’s a lightweight option, and a manageable 3.2 x 2.0 x 6.5″ in size.

The Filter Pro has three-stage filtration, with the carbon filter capable of handling 2000 liters before needing replacement, and the other two filters handling up to a huge 100,000 liters.

You can push up to 17oz (500ml) of water a minute through the Filter Pro, which is more than fine when traveling as a couple or individual. You can filter a liter or two of water in a few minutes before heading out for the day.

The company touts the efficiency of its 0.1-micron filters, particularly for dealing with heavy metals that most other systems can’t touch.

Reasonably priced and with an easy-to-use pumping mechanism, the only minor flaw for travelers is the tube-based intake mechanism. It works very well for filling from rivers and lakes, but can be a bit fiddly to use from a tap. Still, there’s always the sink!

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Which Would I Buy?

So, crunch time. If I had to buy a water purifier for an upcoming trip, which would it be? All things considered, I’d go for the Grayl Ultralight for most short to medium-length trips. It’s effective, durable, and easy to use, at an affordable price.

Being able to filter out light sediment and other particulates, while still having the option of using the filtered water outside the bottle, makes it more useful than many of the alternatives.

Since the purified water stays inside the GRAYL, there’s no need to carry a separate bottle or container as well, which is useful in keeping the weight down. For all those reasons, it’s my pick for the best water purifier for travel in 2020.

If I was planning to spend months or years somewhere where the water quality was dubious, though, I’d opt for the LifeSaver instead. With long-lasting cartridges, it’d easily pay off its higher price, and not having to find replacements so often would also be very useful. It’s also more robust than many other models of water purifer, which can never be a bad thing.

Finally, if I was confident I’d only need to filter water that wasn’t contaminated with particulates or heavy metals, I’d also consider the CrazyCap. It’s more stylish than the rest, and extra features like insulation and using the cap to sterilize other items make it an appealing option.

Unlike a filter-based purifier, the UV lamp should last hundreds of thousands of cycles, so there are no concerns about having to find replacement parts mid-trip.

Do you carry a water purifier? Which one, and why?

Main image via Olichel, product images via Amazon.

About the Author
Dave Dean

Dave Dean

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Founder and editor of Too Many Adapters, Dave has been a traveler for 20 years, and a geek for even longer. When he's not playing with the latest tech toy or working out how to keep his phone charged for just a few more minutes, he can probably be found sitting in a broken-down bus in some obscure corner of the planet.


  1. Avatar

    I have a water-borne enterovirus from being given well water as a baby on the family farm in the US. I have a diagnosis of Immunology Deficiency Subclass (IgG 3, IgG 4 & IgM) as well as Chronic Fatigue Syndrome. Contaminated water is no joke.

    I researched this topic. I bought the Seychelles water bottle. It’s certified my multiple US and UK agencies. It works well to clean water. It’s cheap, light and you can get different filters for radioactive water (Japan post nuclear meltdown), city water, stagnant water, etc. The owner of Seychelles started Pur Water and sold it. Then he started Seychelles.

    I went to my tailor to have a carrying sling made.

    Then I left the country. I found the water bottle filter method difficult. I had to squeeze the bottle and suck….. Hard. This requires 2 hands which is inconvenient. I prefer to only use 1 hand. I had a difficult time sucking up the water. You have to suck hard to pass the water over the filter. I abandoned my water filter bottle and bought bottled water instead. I have a bottle for sale with loads of extra filters. Let me know if you want to buy it. Maybe you can find it more useful than I did?

    I’m going to buy the largest LifeSaver bottle next. I’m getting away from the water filter straw.

    I hope that helps.

    1. Dave Dean Author

      Thanks Anja, great information. I definitely think the all-in-one, pump/squeeze versions are best — easier to use, for a wider range of things.

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    I’m a huge fan of SteriPens. My wife and I have been using it for years and never had any issue. I pair it with a collapsible Nalgene bottle… compact, light, easy to use, water taste (if an issue) is easily over come with any of the powdered or liquid flavor packets available pretty much everywhere. No “sucking” not carrying around a heavy filter you don’t need and not purifying water that doesn’t need to be purified.

    1. Dave Dean Author

      Yeah, within its limitations its a good device. I must admit that my personal experience wasn’t as good as yours — I started my trip with one that was working, and the first time I went to use it (which was admittedly a few months later) it didn’t work. Even after replacing the battery (which wasn’t so easy to find, because it was the C123A type), the lamp just didn’t want to light up, even when immersed in water. I didn’t mention it in the article, because one bad experience doesn’t mean the product is flawed for everyone, but it did put me off a bit.

      1. Avatar

        Hey Dave – sorry to hear that your Adventurer Opti didn’t operate as expected. We have a great Technical Support team that will be happy to troubleshoot or take a look at your SteriPEN. Have you contacted them? If not, please do! or 888-826-6234. We want to make sure you have a working pen! – Julie @ SteriPEN

      2. Dave Dean Author

        Hi Julie,

        Thanks for the comment — no, I didn’t contact them, as I was travelling through SE Asia for several months at the time, and figured that without a local support center I could walk into, or me having a stable address for shipping, there wasn’t much that could really be done. I disposed of the dead Steripen after that, so unfortunately I no longer have it.

    2. Avatar

      Great to hear, Rick! Glad to hear SteriPEN has been there for you on your adventures!

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    I bought the water2go bottle for my trip. I’ve had nothing but bad luck with it. My very first flight I managed to lose the silicone sleeve and it didn’t take long to find out that it leaks like crazy any time that it is not perfectly upright (which no matter how I place it in a bag it always manages to end up upside down – would be ok if it had a tab to put a clip through to hang it from my bag) I gave up on using it. I’m swapping it for a clearly filtered bottle which is waiting for me at home. I’ll be picking it up when I visit home before I go to Nepal and India.

    1. Dave Dean Author

      Hi Jaimee, that’s useful info, thanks! I did read a couple of reviews that said something similar — it didn’t seem to be all that widespread a problem, but it sounds like it might be. Leaking water bottles in a daypack that often carries electronics is not a good thing!

      1. Avatar

        Yeah, I had a bit of a freak out when it leaked on my camera the first week. Luckily I had it in a neoprene sleeve which didn’t let too much water through so the camera was fine. I’m using a clearly filtered bottle as of today. I can clip it on the outside of the bag which is helpful.

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    I have had my Seychelle bottle for 15 months and have had no problems with it at all. I take it with me wherever I go whether I’m abroad, at home or going to the gym.

    Throughout years of traveling, I found myself at times ill (learning later the symptoms were dehydration) for disliking the taste and smell of some ordinary municipal tap water. That hasn’t happened once since I got my bottle and replacement filters at Amazon/ebay.

    And I love imagining how much plastic I’ve saved from being created/recycled.

    1. Dave Dean Author

      Calvin – assuming you’re talking about this, then while it’s a decent lightweight, low cost filter, it doesn’t get rid of viruses. As I mentioned at the start of the post, that was a requirement — given what’s in the water in some developing countries, it’s something that’s very much needed in a device intended for travelers.

    1. Dave Dean Author

      Unfortunately I haven’t been to either country, so can’t make a specific recommendation — sorry!

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    Can water purifying tablets be used then any of the above? Any precautions while using those?

  6. Avatar

    Do you have any thoughts about the Aquapure Traveller bottle? This also seems to filter viruses and looks quite good from what I can see. I’m currently trying to decide between then Aquapure and Traveltap.



  7. Avatar

    Traveling to China for first time. Have Crohns and worried about water. What do you recommend

    1. Dave Dean Author

      I’d suggest buying bottled water, and either tipping it into something like a Life Saver or treating it with a Steripen before drinking if you’re concerned about where that bottled water came from.

    2. Avatar

      We are going on a cruise and the drinks package for water is high. What do you suggest as i am diabetic and 73 yrs old. JAR

  8. Avatar

    Thanks for the thorough analysis Dave. Have you ever tried the Katadyn MyBottle Water Purifier? Any thoughts?

    1. Dave Dean Author

      Hi Max,

      I haven’t used it, no. The specs look good for the price, but the Amazon reviews are pretty mixed. There are reports of leaking, and several people saying it’s very difficult to suck water out of it. It might be worth trying out, but you’d want to make sure you could take/send it back if you weren’t happy with it.

  9. Avatar

    Hi Dave, Im traveling to Jamaica and not positive on there water situation as I wouldn’t be staying at a resort. I found Life Straw Go Water Bottle and thought about getting that. But the drink safe one may also be good.

  10. Avatar

    hi there!! I’m heading to sri lanka and then india for a month, any sugestion on what could be the best option, concidering the major issue that tap water represent over there? thanks

    1. Dave Dean Author

      I drank bottled water without issue while in Sri Lanka, but haven’t been to India. In Sri Lanka, at least, it was easy to find and very cheap, and as I wasn’t travelling with a sterilizer of any kind at that point, made the most sense.

      In India, I’d probably buy bottled water, then run it through something like the Travel Tap (above) in case the vendor had decided to refill the bottle with tap water. The stories about water-borne illness in India are legion, so I’d be looking to reduce that risk as much as possible.

      1. Avatar

        thanks Dave!! but what I’m trying to do is to avoid(really hard) or minimize consuming plastic!! do u think it would be safe just refilling the Travel Tap(or any other) using water from the tap????
        thanks again

      2. Dave Dean Author

        I can’t make that determination for you, sorry. I don’t have personal experience of the water situation there, and the reports from other travellers aren’t great — I’d hate you to follow my advice and get sick!

  11. Avatar

    I see! thats what I’m getting travel tap” seams to be the most accurate one for this trip! I’ll report how it goes!
    thanks for replying!!

  12. Avatar

    HI thank you for the post and the continued follow up replies. this has been very helpful with figureing out which filter/purifier to take on a trip. I was wondering now that Grayl’s prices have come down a lot (filters $25 and a non stainless steel option) would you consider it a better filter then the straw filters?

    1. Dave Dean Author

      I do prefer the way the Grayl works, so as long as you’re happy with the smaller capacity and carrying extra filters with you, yup, I’d say it’s a better filter. As you say, the price is noticeably more reasonable now, at around $60 for the basic model and $25 for the filters.

  13. Avatar

    hey there!
    So my BFF and I are going to Cambodia in march. Neither of us have been over seas. She is allergic to iodine, would the steripen be enough for the water there?

    1. Dave Dean Author

      I’m afraid I can’t give advice about suitability in a specific country — you’d want to contact the manufacturers, although I don’t know that they’ll commit either. On a personal note, I’ve always bought bottled water while in Cambodia.

  14. Avatar

    I’m Traveling to Costa Rica. Any advice about buying water down there or traveling with filters etc?

    Thanks in advance!

    1. Dave Dean Author

      I haven’t been, unfortunately — although as mentioned above, I can’t give advice about water quality in individual countries anyway.

  15. Avatar

    Hi Dave Dean,
    Thank you so much for your report!
    I am getting ready to start a graduate program that will have me studying in
    India for 3 months.
    I know you have no personal experience with that country, but I was hoping you could help me choose between the LifeSaver and the DrinkSafe Travel Tap?
    While I do like to pack lite, I am a HEAVY water drinker, and I am very nervous about not having reliably safe drinking water. I figure it’s worth not bringing an extra pair of shoes if it means peace of mind 🙂
    Any thoughts about the choice?
    Thanks in advance!

    1. Dave Dean Author

      Either should last you the length of your stay in India. Whichever one you buy, I’d suggest getting it well ahead of time and testing it thoroughly for things like leaking, water flow rate, etc, to make sure you’re happy and can get a replacement or alternative if needed. Obviously you can’t test the purification part of it with tap water from home, but reviews of both filters talk about having used them in India with no problems. For extra security, it might be worth calling the manufacturers or distributors and asking them specific questions. 🙂

  16. Avatar

    Hi Dave —
    Could you advise on where to buy a Travel Tap bottle in the USA? Amazon says it can’t ship the bottle from the UK.

    1. Dave Dean Author

      I can’t, I’m afraid. Maybe drop the manufacturer a mail through their site and see if they have a US distributor yet?

      1. Avatar

        Hi Dave — I took your advice and contacted DrinkSafe directly. They could not have been quicker to respond or more helpful. They answered my questions, took my order, and shipped my Travel Tap — all within a matter of hours!

      2. Dave Dean Author

        Oh that’s fantastic! So happy to hear it – and thanks for coming back to let me (and everyone else) know!

  17. Avatar


    I’m living in Shanghai where the quality of the tap water is very questionnable (metals, bacterias and maybe viruses). Do you know which bottle would suit me best ? (i’m also on a budget, so I would like to avoid the lifesaver for example)

    Thanks in advance,


  18. Avatar

    headed to SE Asia next month and i’m very interested in buying one of these. the right one, of course.
    i want to be able to fill up with tap water anywhere and maybe even up in the mountains. it looks like travel tap would be the best with the squeeze action for toothbrushing/cleaning/filling. however, it also looks like they only ship to the UK…. am i reading this correctly?

    1. Dave Dean Author

      Please see the comment from Delores a few days ago on how she got a Travel Tap shipped elsewhere in the world.

  19. Avatar

    I have the Grayl – Quest version since 2015 and it has been my travelling companion. I prefer it to the others cos’ of its ease of operation. Although on the pricey side but worth the investment.

    My recent trip to Laos gave me quite a bit of savings with my Grayl with the tap filter (USD14.50). A 1.5L of bottled water cost Laos kip 5000 -7000 (USD 1 = Kip 8000). Assume 2L per day, for 10 days would be 20L i.e. 14 bottles which works out approx USD 9 based on Kip5000. Most places you would have access to tap water. Keep the purifier filter for remote areas.

    After a flight especially on budget airlines or late at night upon arrival, with my Grayl, I no longer need to hunt for water.

    Most tap water in SE Asia are fine but in doubt, use the purifier filter.

    Hope the above helps in some way.


  20. Avatar

    Grayl – been using one for a year, fill, squish, pour into lager container, has paid for itself many times over in free water and not to discount the value of health and peace of mind

  21. Avatar

    Hey all, great read. I took Grayl for a test spin almost 6 months ago on a 75 mile trip from Sequoia National Park to the top of Mt Whitney. I absolutely loved it in the beginning but as the trip went on it became harder and harder for me to press down to filter.

    1. Dave Dean Author

      Sounds like the filter maybe got clogged or wore out – the instructions say it’s time to replace it if pressing down gets more difficult.

  22. Avatar

    Yep, it’s doing its job filtering out the junk, remember the cleaner the water you’re starting with in regard to floating solids the longer the cartridge will last before changes.

  23. Avatar

    Have used a grayl for years now. First their original, now the ultralight. Love it, but yeah, limited capacity, which is actually fine cause you can easily refill a Camelback or other bottle from it, and I do wish the filters lasted longer. Saves so much money in hotels and airports, and hassle not having to go to the store to get water. Honestly though, would love to have something much smaller. I travel with a carry-on only, and it takes up a decent chunk of space.

  24. Avatar

    I am reading many negative comments on other sites about the Grayl Ultralite … it apparently becomes increasingly difficult to use from day 2 to day 3 to day 4, etc. e.g. had to take all body weight, barely usable by day 4, filter only good for 20L not 150L, etc. … Dave, any comments about this? Many thanks in advance.

    1. Dave Dean Author

      I can’t speak for other people’s experiences, of course, but that doesn’t match what I’ve seen. As an example, my girlfriend bought a GRAYL and took it to Mozambique for two weeks, using it multiple times a day while there. It worked fine throughout, and she was still using the original filter by the end of the trip.

      I know the product is designed to get harder to push as the filter approaches the end of its life, and heavily-sedimented water will reduce its lifespan, but whether that’s what other reviewers are seeing, I can’t really say.

      1. Avatar

        Ok thanks a lot Dave. I’ll go with your recommendation and give it a try, traveling to Bolivia for the month of June, and tired of lugging around plastic bottles and then wasting them.

  25. Avatar

    I’m wondering if you’ve tried the Life Straw GO bottles? I’m heading to Nepal to teach in April.. . .

    1. Dave Dean Author

      It unfortunately doesn’t filter out viruses, which is a key criteria for any product we’d consider for travelers.

    1. Dave Dean Author

      None so far. My one is stil going strong — my partner is actually taking it with her on a trip to India later this week.

  26. Avatar

    Seems like Grayl is a favorite around here. I’m heading to Ethiopia next month. Aside from Grayl, what other bottles do you recommend? I’m not sure what access we will have and the capacity is so limited.

    1. Dave Dean Author

      When I’m going to places where I’m worried about finding enough water to purify, I take one of these sort of things along with me as a spare container. It folds down to virtually nothing in my bag, but I can purify an extra couple of litres in advance and carry it with me if I need to.

  27. Avatar

    FIlteration can’t cope with chemical contamination. It needs ionization to break chemical chains at a molecular level.

    Many people believe 0.1 microns can trim all chemicals. Unfortunately, the atomic level of the chemical chain is much smaller. Electrolysis & flocculation are required.

    Measure PH, TDS at first, if PH is below 6, I would not consider

  28. Avatar

    What’s your opinion on a sport berkey? I’m not sure if it removes viruses

  29. Avatar

    Great article! I’ve use a Steripen (Pure+, also rechargeable) for some years and it’s an OK solution. In the article you mentioned “…I’d rather carry a bottle with a UV lamp built in”, so why not put one of those in the list? I’m aware of two options right now: LARQ, or CrazyCap (yeh stupid name I know…). Of these I prefer the flexibility of the CrazyCap, but it needs a bulky proprietary charger and is only compatible with small bottles. I’d love to hear your thoughts if you’ve tried either!

    1. Dave Dean Author

      Thanks Jade — I hadn’t come across either of those bottles in the past, which is why they’re not included! 🙂 They both look pretty good, and at least claim to kill viruses as well as bacteria.

      They suffer from the same problem as the Steripen and other UV-based approaches in that there’s no filter, so whatever taste, chemicals, and heavy metals are in the water will stay there and the sterilization only works on clean (ie, clear) water, but other than that they seem well-reviewed and have some nice extras like being able to sterilize other small objects (Crazy Cap) and being insulated to keep drinks hot/cold (both).

      We may well include one or both of them in the next update!

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