Having clean drinking water is a necessary component to just about everything we do. Without it, well… you know what happens.

So, as travellers, hikers, and adventurers, what is a solution to staying hydrated that doesn’t also contribute to the plastic problem? Meet the next generation Grayl water bottle…

I recently got my hands on the vastly new and improved Grayl GEOPRESS filter water bottle and it changed the way I am able to travel and hike literally overnight. Not to mention the fact that I have eliminated single use plastic bottles from all of my travels and daily life.

From simply turning tap water into drinkable water or removing waterborne pathogens and heavy metals from dirty water, the Grayl Geopress purifier bottle is a beast… and it takes zero setup!

The famous Grayl water bottle model that received a lot of hushed murmurs of titillation in the outdoor and backpacker world a few years ago has gone through a serious revamp this year. The new GEOPRESS design is now more awesome and more functional than ever before! I just spent 6 weeks guiding trips in the Karakoram in Pakistan and my team and I had the opportunity to put the Grayl GEOPRESS through its paces every step of the way.

After years of using a variety of different personal water purification systems, I found myself disappointed (and sometimes thirsty) by the performance of just about everything I tested while backpacking.

This epic Grayl GEOPRESS review will bring you up to speed on everything I learned about what it’s actually like to trek and travel with this filter water bottle. If you also are looking for a badass purifier bottle to hydrate your next backpacking adventure, you NEED to read this review because this Grayl purifier bottle NEEDS to be on your radar.

You can drink from pretty much anywhere.
Image: Nic Hilditch-Short

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Quick Answer: The Grayl GEOPRESS Filter Bottle Nitty Gritty

  • Capacity: 24 oz / 710 ml
  • Weight: 15.9 oz. (450 g)
  • Flow Rate: 8 seconds per 24 oz. (5 L/minute)
  • Filter Cartridge Lifespan: 350 presses (65 gal/ 250 L)
  • Best Uses: Backpacking, International Travel, Adventuring, Survival

Looking for a standard water bottle instead? Check out the best travel water bottles and see if one fits your needs.

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Grayl GEOPRESS Review: Performance Breakdown

Finding a way to get clean water on the road or in the backcountry is always tricky. If, like myself, you travel a lot internationally and/or spend heaps of time in wilderness areas (where there are no drinking fountains, of course) you need a one-stop solution that is both functional and practical. That’s where the Grayl water filter bottle comes in!

white grayl geopress
Purifying some drinking water in Cuba.
Photo: Chris Lininger

For many of the places in the world I travel to, drinking the water from the tap or a side stream on a forest trail is an almost guaranteed ticket (one-way with no plans) to the toilet bowl. The only practical previous option I had whilst travelling was to buy plastic bottles. My soul hurt every single time I bought plastic, but hell, we all have to drink water, right? At least then I knew I would not be having some diabolical form of Montezuma’s revenge careening through my digestive tract. Then I found the holy grail … with the Grayl!

Hell, even most of the hostels I’ve stayed in have tap water that needs a water purifier to even think about drinking!

Once I had a GEOPRESS purifier water bottle in my gear kit, it was pretty much game over for the plastic BS from there. No more plastic bottles and no more fear of parasite-ridden water. The best of both worlds. This beast is a filter and purifier all in one!

On my last trip to Pakistan, I was able to easily filter water from my hotel sink in Lahore before I also sipped on filtered and icy cold glacier water from the Himalayas and Karakoram. That beats the hell out of tap water any day. The Grayl Geopress water purifier really is a game changer!

But how does it all work? Is it actually a functional filter water bottle? Let’s dive in and find out all the deets about the Grayl Geopress purifier bottle …

I’ll finish with this – Once upon a time I lost my original Grayl… and soon after contracted a parasite from some questionable water. Since replacing it with the Geopress, I’ve been able to stay parasite-free at multiple high-altitude campsites and other escapades. It’s revolutionized my travels, and by buying one, you’ll also be helping out the planet by not adding to the plastic problem.

Grayl water bottle backdropped against a gorgeous sky
Bam! And the dysentery is gone.
Photo: Chris Lininger

How the Grayl GEOPRESS Filter Bottle Works: The Water Bottle that Changed the Game

I love the Grayl GEOPRESS purifier bottle for its simplicity. To magically turn stank ass giardia-ridden water crawling with a million things that will ruin your intestines into a drinkable, healthy water source in 8-12 seconds is nothing short of a miracle and I fully trust my gut health to the Grayl filter.

This Grayl purifier water bottle basically has three main parts: the main outer cylinder where dirty water goes in, the filter cartridge, and the inner sleeve where your soon-to-be clean water lives. Once you fill the outer cylinder with dirty water, the only thing to do is insert the inner sleeve into the top of the cylinder and push it down until all of the dirty water has been pressed through the filter and into the clean drinking reservoir. It’s both a filter and purifier water bottle in one.

The purification process is super simple with virtually no setup time making virus and chemical removal quick and easy with the Geo press.

Water being filtered with the grayl geopress
Purifying glacier water in the Karakoram Range.
Photo: Chris Lininger

It’s that simple amigos. Fill, press, drink: the Aeropress of water filtration! The Geopress really is that easy to use!

Why the Grayl Geopress Water Filter is the Best

What’s the real benefit of using the GEOPRESS water purifier? The bottle protects from global waterborne pathogens (virus, bacteria, protozoan cysts), pesticides, many chemicals, heavy metals, and even microplastics. Basically… everything. Except maybe the zombie virus. Na… probably that too.

We all know that with the current state the world’s in, having a purifier system that works like a Spartan warrior against all of the toxic shit waiting to enter your cells is one of the keys to the GEOPRESS’s success. IT WORKS. From Nepal to Ecuador to Pakistan, there are some serious viruses, heavy metals and bacteria in the water that could send you straight to the hospital if not filtered properly.

After filtering some green-tinged soup vaguely resembling water in Pakistan to a tasty status, the bottle earned my full confidence and respect. Likewise, when I used it to purify water from a river in Bali (jungle parasites, hurray!) the Grayl Geopress filter bottle kept me healthy, hydrated, and oh so happy… and oh so confident in the Geopress water filter for any adventure.

Everyone is happy when they don’t have crippling diarrhoea!

Man drinking from his grayl water filter bottle
This right here is a man with clean underwear.
Photo: Chris Lininger

After many uses, the Grayl GEOPRESS filter bottle does become a little harder to press. What once took you 8 seconds will eventually take 12-20+ seconds and soon after it will be time to purchase a new filter/ purifier cartridge (yes, they’re replaceable).

A major improvement from the Grayl Ultralight bottle is the ease of doing the press action. For myself and many others who loved the concept of the 2nd generation Ultralight bottle, the new GEOPRESS functions much better in my opinion. Maybe it’s the bigger surface area to work with or maybe Grayl got the bottle geometry dialled in just right in their tinkering? This brings me to my next point…

The New Grayl GEOPRESS Water Filter Bottle Has a Larger Capacity

One of the major improvements Grayl made with the design of the new GEOPRESS was making it bigger. The capacity went from 16 oz. with the Gryal Ultralight Purifier bottle to 24 oz. with the Grayl Geopress. This change catapulted the bottle from being a cool concept to a practical hydration vessel good enough for both thirsty hikers and sweaty travellers waiting in Indian train stations.

I found on my hiking trip to Pakistan that I always needed every bit of the 24 oz. capacity. Sometimes water sources would be several hours apart. Truth be told, I’d like to see a full 1-litre Grayl filter bottle, but I also realise that the physical bottle might then become bulkier than I’d want to carry.

Size isn’t always a good thing. The only negative aspect for me as a guide (meaning someone who packs a ton of adventure gear) is the size of the bottle. It’s not so big as to not be impractical, but it’s getting close. It’s shaped almost like one of those JBL speaker cylinders, thus it can’t fit into my backpack’s side pockets.

That said, the bottle itself is as tough as nails and can even survive a 10-foot fall when full of water!

My solution (to both the size issue and my dropsies) was to attach a carabiner to the very handy hook on the lid and clip it to my backpack at a point where I could get to it easily enough. That worked just fine and off I went for an adventure with my trust Grayl Geopress water purifier bottle hanging off my bag.

A grayle geopress assisting me in watching Bollywood films
This epic purifier water bottle comes in handy for a Netflix sesh too!
Photo: Chris Lininger

At the end of the day, the large bottle size is worth having for the full 24 oz. of clean water you get in return. When you are active, you can almost drink 16 0z. in one shot. The 24 oz. Grayl Geopress filter bottle means less pressing and more drinking.

The Power of the Grayl Purifier Cartridge

As I already said, the purifier found in the GEOPRESS is a next level filter for travellers and hikers. Like all filters though, the Grayl Geopress purifier filter does have a lifespan. With one purifier cartridge, you can get roughly 350 cycles (65 gal./250L). As “press time” reaches more than 25 seconds (or three years have elapsed since first use), it’s time to replace your purifier cartridge.

I went through roughly 100 presses during my time in Pakistan and the bottle still gives me a roughly 10-second press, which I’m stoked about. I still got a ways to go before I need a new purifier cartridge!

Let’s be clear though, the GEOPRESS is much more than just a water filter. Unlike most water filters which simply remove bacteria and parasites, the GEOPRESS purifier removes viruses and heavy metals. Therefore, it is effective anywhere in the world!

Filters generally only work in North America, Western Europe, and five countries in Asia. That means they aren’t effective in more than 100 countries worldwide. For people like me who operate in truly remote parts of the planet, most standard water filters leave a lot to be desired.

When you buy your GEOPRESS, I suggest you pick up at least one replacement filter cartridge as well so that when the old one has had it, you can quickly swap it out without missing a beat.

Here, you can pick up a replacement Grayl filter cartridge easily for your purifier water bottle.

grayl geopress's replaceable filter
With this shade of orange, you’ll have no excuse to lose your filter!

GEOPRESS Water Filter Cartridge Maintenance

The key to getting the longest life out of your purifier cartridges depends on a variety of factors. Perhaps the most important factor is how you store your bottle and filter when not in use. When I remembered, I took the whole bottle apart and placed it in a breezy spot so that the filter could have a chance at drying.

Drying the filter isn’t a quick process, so if you are on a multi-month adventure around Southeast Asia, you need to develop some sort of drying routine, at least once a week. Otherwise, the grand-funk will set in and the GEOPRESS begins to smell a little like the kitchen sink sponge that should have been thrown away last week.

Another factor for the filter is the type of water you are filtering. When possible, it is best to filter water that is clear and free of any noticeable sediment. Gritty water with lots of silt or sand will certainly clog your filter fast than if you were using clear water. Common sense, right?

In Pakistan, there were many occasions when I had no choice. I had to filter greywater from the glacier. Glacier water is loaded with heavy minerals (and sometimes heavy metals), so I needed to filter it. And some of the glaciers in Pakistan are black so the water that comes off of them can also be pretty dark.

In the end, I still got my clean water and my GEOPRESS is still kicking ass. This filter and purifier bottle is a beast!

Another very important detail is that once your Grayl water filter has lived its life, you can return it to Grayl to be recycled as part of their zero-waste initiative. This recycling program may not be off the ground yet, but I heard they will be launching it very soon!

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Best Uses for the Grayl Geopress

Obviously, for travellers and certain hikers, the GEOPRESS is an unstoppable tool of the trade, and too good to beat. That said, the GEOPRESS isn’t for everyone, or should I say every activity. As a former Appalachian thru-hiker who spent my nights dreaming of how to cut down on weight, the GEOPRESS is likely to be too heavy and bulky to be considered in an ultralight thru-hiking kit.

There are certainly other, lighter filter options out there. Take the Sawyer Mini, for example. In terms of weight, the Sawyer Mini is hard to beat.

I used a Sawyer when I hiked the AT. Truth be told I hated that damn thing. It would sometimes take me a minute to filter a litre. But when you’re cutting weight on a big hike, you got to do what you’ve got to do. The Sawyer Mini weighs all of two ounces! I have spent hours of my life squeezing out clean water from the tiny Sawyer Mini nozzle; I still have nightmares about that pitiful trickle sound.

For a weekend backpacking trip to your local mountains and day hikes, the GEOPRESS is perfect and guarantees a drinkable source of water (if water is around). It also means you don’t have to use yukky chlorine tabs or annoyingly slow, nightmare-inducing ultralight filters.

For travellers, the GEOPRESS is something you can have on hand for any and every adventure. If you’re curious about other alternatives for water purifying bottles, you can check out our roundup of the best filter water bottles for travel here.

The Ultralight Water Purifier for Thru-Hikers

If you still want the Grayl magic but don’t feel like packing the bulk and weight of the GEOPRESS, you can always go with the Grayl Ultralight purifier bottle (10.9 oz). Even thru-hikers need water bottles, so having the filter + bottle combination is a pretty sexy looking option if you can justify the couple extra ounces within your thru-hiker soul.

grayl water bottle filtering in pakistan
The hat describes the GEOPRESS pretty concisely.
Photo: Chris Lininger

For travelling backpackers and adventurers the Grayl GEOPRESS is all you’ll ever need because it is an all-in-one water bottle vessel as well as a filter system with enough capacity to be fully practical.

This brings me to my next point…

The Grayl GEOPRESS Water Bottle is Fighting the Evil Plastic Monster

Everywhere I roam in this world, I witness the plastic problem first hand. I mean, it’s not a secret at this point right? The culture of plastic pollution is literally killing our planet.

Whilst travelling in Pakistan this last spring, I got another reminder of just how prolific plastic bottle use is. Many parts of Pakistan have serious plastic overuse and pollution issues.

I did not buy a single individual plastic bottle for myself thanks to my GEOPRESS, which is the first time on any trip that I have ever done that. Forget the money you save (which is another plus). Every traveller has a responsibility to reduce their plastic footprint ESPECIALLY when we travel to countries with no recycling infrastructure. With the tools available (ahem… GEOPRESS), there really are no excuses anymore.

testing the grayl geopress for the review
Photo: Chris Lininger

The fact that the GEOPRESS filters heavy metals and microplastics is another awesome feeling to be armed with. Grayl has truly hit the nail on the head by giving all trekkers and world travellers a realistic way to completely eliminate plastic water bottle waste from our adventure diet. That’s awesome and yet another reason why I put my full weight behind this product after using it myself.

Grayl GEOPRESS Price: How Much Does it Cost?

In terms of water bottles, the GEOPRESS is pretty steep. $89.95 to be exact. But before you write the GEOPRESS off as being out of your price range, consider this: whilst travelling without a water filter, you end up spending between $3 and $8 a day on bottled water. That’s craziness!

Purifying drinking water in Kyrgyzstan.
Photo: Chris Lininger

You don’t need me to do the maths for you. After a month on the road, the GEOPRESS basically pays for itself. Sure it takes a little more effort to filter your own water but the fact is that the planet needs us all to be making an effort. Taking a few seconds to filter your own water vs. buying plastic water bottles will help you reduce your plastic footprint in a big way over time.

I am a firm believer in investing in quality backpacking gear. The right tool for the job is a clichè that I hold dear to my heart. Whilst the GEOPRESS may be a high-end water bottle, it’s obviously much, much more than just a water bottle.

A Grayl water bottle is armed with a filter, so you don’t need to buy a water bottle and then a filter system. You dig?

It makes one hell of a gift for backpackers if you’re stuck for ideas too!

Full disclosure: the awesome team at Grayl outfitted our trip to Pakistan with several GEOPRESS bottles in order for us to give them a proper test run in the field, so no, I did not personally have to buy a GEOPRESS. That said, after getting to know the bottle as well as I have, there is zero doubt in my mind that I would buy one myself – no questions asked.

For Happy Hydrated Adventures, Invest in the Right Gear… i.e. the Grayl GEOPRESS

I believe strongly in giving The Broke Backpacker readership and the outdoor/travelling community at large an honest insight into what a piece of quality adventure gear looks like. If you are looking for a solution to your water needs for your next trip, be it in the Andes, a trip to Morocco, or a day hike into your local hills, the GEOPRESS is worth every single penny you spend on it.

The GEOPRESS went well beyond my expectations during my Pakistan trip. There were so many times when I first started using it where I was like: “Wait, is this thing actually going to keep me safe and deliver clean water?”

Well, it did.

As a guide in the mountains, I certainly can’t afford to be sickened by a lousy gimmick filtration system. The GEOPRESS did its job and I was able to do mine.

grayl water bottle being pressed and filtered
Putting in the best kind of work.
Photo: Chris Lininger

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    Final Thoughts: Grayl GEOPRESS Review

    white geopress
    Drinking waterfalls in Cuba.
    Photo: Chris Lininger

    Well, guys, we have made it to the final act of this GEOPRESS review. By now you should be well on your way to knowing everything there is to know about the Grayl GEOPRESS water bottle.

    Certainly, there is no shortage of water bottle filter combination systems out there. But in my experience, if you want the best-of-the-best, go with the new 24 0z. Grayl GEOPRESS. For true hydration freedom whilst travelling or hiking, no water bottle will do more to protect your body and keep you hydrated no matter what crazy corner of the world you find yourself in.

    The 6 weeks I spent in Pakistan made it clear that it doesn’t matter if you are in the city, the mountains, or somewhere in between, the GEOPRESS will empower your ability to make clean water anywhere. More importantly, you’ll never need to buy a single-use plastic water bottle again. That’s rad and we at The Broke Backpacker are 100%, undoubtedly about that.

    Sustainable travel and trekking are more important than ever before. So is staying hydrated. When you decide to make the switch to a Grayl hydration/filtration system, you’ll never look back, I guarantee it.

    Happy travels, guys, and keep on pressin’ (I couldn’t resist). We hope you liked the Grayl Geopress review!

    What is our final score for the Grayl GEOPRESS? We give it a rating of 4.9 out of 5 stars!


    Do you have experience with the Grayl GEOPRESS yourself that you’d like to share with us? Did I miss anything? Let us know in the comments below!

    Looking for more options? Check out our rundown of the best backpacking water filters. Need to keep your coffee warm or your water cool instead? There’s an insulated water bottle for that job too!

    grayl geopress review finito
    Smooth, tasty, and environmentally sustainable water.
    Photo: Chris Lininger