Water-To-Go Review: The Best Water Filter Bottle For Travel?

Water filter bottles are a travel essential. They help you be a more sustainable traveller by cutting down your single-use plastic consumption, and they save you money. 

Most important of all, they guarantee safe drinking water wherever you go. This is vital if you’re visiting places where drinking tap water is considered risky at best. 

But with so many filtered water bottles out there, which one should you take travelling? This Water-to-Go review can help. 

After trialling a few filter bottles in my time, Water-to-Go has consistently been my favourite, so I thought I’d write a review of my experience. 

It’s one of the best water filter bottles for travel. Here’s why. 

What is Water-to-Go?

Water-to-Go specialises in filtered water bottles for the go. On a mission to change the world, ‘one bottle at a time,’ Water-to-Go helps you save money, stay healthy and be more environmentally friendly. 

It also supports clean water projects around the world. These are just some of the reasons why I recommend this water bottle. 

Currently, Water-to-Go has five different bottle sizes in its range: 

• 50cl
• 55cl
• 75cl 
• Active 60cl 75cl
• 1 litre Eco Active

Each size comes in a choice of seven different colours, including blue, camouflage and limited-edition charity colours. 

The 55cl bottle is made from a durable, plant-based plastic from sugarcane. It has an ergonomic grip design, which makes it handy for the gym or running.

New for 2025 is the 1 litre Eco Active bottle. In the past, the biggest drawback of my 75cl Water-to-Go bottle was that it was just too small.

This bottle takes care of that. Available in silver and black, it has a strap to make it easier to carry. It is heavier than the other models when filled.

All bottles are lightweight and durable, each with the same water filtration system. 

✅Use code FB15 to get 15% off any Water-to-Go water bottle (only available on the Water-to-Go wesite). Buy your Water-to-Go bottle here!

Water-to-Go bottle review 

My first Water-to-Go bottle was the 75cl with a sleeve. Back then, it was the biggest size available and had a different lid design (which I’ve indicated in some of my photos).

I now have the 55cl Eco Active, the 75cl Eco Active and the 1 litre Eco Active models with updated lids. I use my 75cl Eco Active bottle the most and take it everywhere I go. I recommend it for travel, as you don’t have to fill it up as much, but it’s not too heavy.

For this Water-to-Go review, it’s important to know that all bottles have the same filter technology, no matter which one you use. The only differences are the sizes, shapes and some of the materials.  

How the filter works 

All of Water-to-Go’s filters use a special 3-in-1 filter technology to get the best water filtration possible (it was originally developed for NASA!). 

So what does that mean? 

The filter, attached to the bottle lid, combines three technologies to filter out 99.9999% of all microbiological contaminants. These are: 

• Mechanical filtration – the filter has been designed to have a small pore size to prevent contaminants from passing through.
• Electrical filtration – a positive charge reduces the pore size, even more, trapping even minuscule contaminants like viruses inside the filter. 
• Activated carbon – a classic filtration tool that removes heavy metals and organic chemicals. It also improves the water taste!

✅ Get 15% off your water filter bottle when you use code FB15 at checkout. Only available on the Water-to-Go website!

So, what exactly does the filter remove? 

The list is pretty extensive, but examples include viruses and bacteria like Hepatitis A, Typhus and E. coli; parasites and waterborne pathogens like threadworm and tapeworm; and metals and chemicals like chlorine, mercury, fluoride and Volatile Organic Compounds (VOCs).

Also, microplastics!

Note: Once their time is up, Water-to-Go’s filters will stop working, and you won’t be able to drink any water from the bottle. This means you won’t drink contaminated water by mistake! 

Where TO use it safely

You can use Water-to-Go filters on any freshwater source worldwide. This includes non-potable tap water, streams, lakes, fountains… You name it. 

You can take it to the gym, office, hiking, trekking, camping, backpacking and travelling. You can also use it at home for guaranteed tasty and contaminant-free water (I do this sometimes). 

I’ve used it on streams on the Isle of Skye and filled it up from a waterfall on the Isle of Mull in Scotland. I’ve also used it with tap water in hostels in Fiji and hotels all over Mauritius and Costa Rica.

I’ve even used it with tap water from airport bathrooms when there were no designated water refill stations (a real gripe of mine!). 

Water-to-Go’s filters have been tested all over the world, including in China, India, the USA and the UK. It’s also been independently tested by three separate laboratories. 

Where you can’t use it 

Water-to-Go filters aren’t compatible with saltwater. Always choose freshwater sources. 

Never put other liquids in it like juices, tea or um…bodily fluids (sorry). They will only damage and clog the filter. 

How to clean your reusable water bottle

You can wash your bottle by hand using washing-up liquid and a sponge, paying special attention to the rim, lid and mouthpiece. I tend to just rinse out the filter with hot water so as not to contaminate or clog it.

The trickier part is keeping your reusable water bottle hygienic when travelling, particularly if you’re in an environment with unsafe drinking water.

If your trip is longer than a few days, pack a sponge and a small container of washing-up liquid (if travelling carry-on only, make sure it’s less than 100ml).

I recommend a gentle washing-up liquid like Ecover.

Wash your bottle as normal and then rinse it with hot water. It needs to be hot enough to kill bacteria, but not boiling (about 65°C).

You should be able to do this in your hotel or wherever you’re staying. If you don’t have hot water, you could use a solution of diluted vinegar and water, but don’t let it get into the filter.

Note: Water-to-Go filters are not dishwasher safe, so always wash them by hand. 

Why buy a water filter bottle for travel? 

1. Reduces plastic
2. Saves money 
3. Better for your health

Reduces plastic

Single-use plastic is a huge scourge on the environment. It clogs waterways, breaks down into microplastics and gets ingested by wildlife (and humans). Plastic also takes approximately 450 years to decompose, so we’re stuck with it for a long time. 

Plastic bottles are one of the biggest contributors to single-use plastic waste. People around the world buy a total of one million plastic bottles a second. That’s nearly 1.4 billion plastic bottles a day.

Water-to-Go’s filter can replace between 260 and 400 single-use plastic bottles, depending on your size. Opting for a water filter bottle is one of the most impactful ways to reduce your plastic waste. 

Read more: Sustainable Travel Packing List 101: Your Complete List for an Eco-Friendly Trip

Saves money 

Water filter bottles like Water-to-Go give you safe drinking water at just 5p per litre. Now compare that to the amount you have to spend on bottled water throughout the day. 

Arguably, bottled water isn’t a huge expense (about 65p for 1 litre in the UK), but it does add up over time. Plus, you have the added faff of hunting for drinking water. 

Here’s a chart to compare the two: 

Water-to-Go has standard replacement filters which are effective for up to 200 litres each. They fit any of their filter bottles, whether you have the 75cl, 50cl, 1l or the sugarcane bottle.

They used to have specific filters for each bottle size. This new one-size-fits-all filter means all water filter bottles last the same amount of time regardless of size.

The cost of a replacement filter is £27.99 for a pack of two, but that will keep you going for six months if you’re using it for drinking two litres a day. 

You can also buy a single filter pack for £16.99.

Better for your health

Safe drinking water is a top priority when you travel. This is usually because the water’s chemical makeup differs from what your body is used to. At best, you might end up with a dodgy stomach (still not ideal!). 

At worst, the water could contain harmful microorganisms that could make you seriously ill or even kill you. 

Some waterborne nasties include: 

• Bacteria
• Protozoan parasites
• Viruses
• Heavy metals 
• Chemical contaminants
• Microplastics 

Even if you buy bottled water, you can’t always guarantee it’s free of contaminants. The Water-to-Go bottle filters all of these out of any freshwater source, no matter where in the world you use it, guaranteeing safe drinking water. 

Water-to-Go bottle review: My experience

Flashy specs and features are all well and good, but what’s the bottle like to use and is it worth it? 

I’ve had my Water-to-Go bottle for a while now, and I’ve used it on various water sources all over the world without any problems. 

I throw this bottle in my bag whenever I leave the house, whether it’s a day out or travelling. Overall, I’m very happy with my Water-to-Go. It’s lightweight, easy to hold and easy to carry.

The bottles have relatively flashy branding but a good range of colours and styles to choose from, so it’s easy to find something you’ll like. 

As a quick comparison, I also have the LifeStraw bottle, another popular water filter bottle around the same price point. 

Water-to-Go’s 75cl bottle comes out on top for me for several reasons: it’s cheaper, has a better-designed lid to protect the mouthpiece and doesn’t leak. Now that the bottles go up to 1 litre, it’s competitive with similar water filter brands like Lifestraw.  

What I love about Water-to-Go 

Here are some key reasons why I like this water filter bottle:  

Powerful filter

Water-to-Go does have a hard-to-beat filtration system, and I feel safe drinking from it wherever I go. 

But more than that, the water always tastes good, too, which is something I didn’t appreciate until I tried another water filter bottle that had a horrible chemical taste when I first used it. 

The taste eventually disappeared after a while, but I’ve never had that same problem with Water-to-Go. There’s no dodgy settling-in period. 

The filters last a long time, too. I’ve had my bottle for a few years now, and I’ve not had to change the filter yet. It’s my main travel bottle, though, so there can be a few months between uses if I’m at home.

Durability 

Since I stick my bottle in my backpack’s external pockets, it gets thrown about a bit on the road, but it holds up pretty well. Although the bottle is lightweight, it feels relatively sturdy, and the colours haven’t faded at all. 

I have started to spot some light scratches appearing on the lid and bottle, but they’re hardly noticeable.

Great size 

Water-to-Go’s 75cl bottle might not be as big as other competitors’, but it’s still a great, portable size for travel. Not much bigger than a standard bottle of water, in fact. 

The shape of the 75cl bottle makes it harder to get it to fit in the external pocket of my backpack. I much prefer the shape of the 75cl Eco Active and the 1 litre Eco Active bottles.

You can also stuff them easily into a daypack when you’re out and about. 

Affordable price 

For me, one of the biggest selling points of the Water-to-Go is that you get a top-quality water filter for an absolute steal. 

Super high-end bottles like Grayl are about £75-£100, whereas Water-to-Go will set you back about £37.99, which I think is worth it for what you get. 

At just £37.99, it filters out 99.9999% of all microbiological contaminants from any freshwater source, proving you don’t need to shell out for the privilege of safe drinking water. 

Good design 

A key feature of my 75cl Water-to-Go is the lid. The brand has updated its lid design in the years I’ve had my 75cl bottle. The cap now covers the entire mouthpiece area to keep it clean and protected.

This might not seem like much, but it’s hugely important when keeping the mouthpiece clean and protected. There’s also no danger of it coming into contact with contaminated and unfiltered water. 

Both my 75cl and 1 litre Eco Active bottles have this new lid design. I much prefer it as the mouthpiece is fully protected rather than just the ‘straw’ area.

Another big benefit of the lid is that it prevents leaks. I can put the bottle in my bag without fear of spills if I don’t keep it upright (unlike my LifeStraw). 

It’s worth noting that this wasn’t always the case. Water-to-Go’s lids were notorious for being leaky, but a 2020 update eliminated the problem. 

The main difference is that the mouthpiece is slightly larger, making it easier to drink from. The mouthpiece doesn’t bend out (like older models) but rather has a lid that clicks in place. 

Water-to-Go is constantly innovating its bottle design. If you ever want an upgrade, you can buy a replacement lid, and it will fit any bottle. They are designed for a lifetime of use.

Remember to use the code FB15 to get 15% off on the Water-to-Go website.

Ethical company 

Before buying any product, it’s always worth checking what the company stands for. Water-to-Go is no different. I’m hugely impressed with the company’s commitment to supporting charities around the world. 

Charity partners it works with include Just A Drop, which provides safe, sustainable drinking water, sanitation and hygiene in underprivileged areas. 

Another partner is the African Wildlife Foundation, which works to support local communities and wildlife conservation across the African continent. 

What I don’t love about Water-to-Go 

The bottle isn’t 100% perfect. Here’s a review of some of the issues I have with it: 

Difficult to drink from at first

When I first used my bottle, it was quite difficult to drink out of as I had to suck quite hard (yes, har har) to get enough water. It did get better eventually, but you’re still better off taking slurps and sips rather than long drinks. 

There’s also always a tiny bit of water at the bottom of the bottle that I can’t get to, which is annoying. However, I’ve found this with every water filter bottle I’ve used, so it’s not just specific to Water-to-Go. 

Note: If you’ve ever taken a water filter bottle on a plane, you may have noticed that the air pressure causes the water to dribble out of the top when you take the cap off. Unscrew the lid carefully to release the pressure, then screw it back on before taking the cap off to drink. Otherwise, you will be soaked (I speak from experience…).

Some plastic Elements  

At the end of the day, these water filter bottles aren’t entirely plastic-free. The filters you replace also contain plastic (albeit BPA-free). You can get plastic-free reusable bottles, but I don’t recommend them for travel as they don’t guarantee safe drinking water. 

As it stands, I’m yet to find a plastic-free water filter bottle with the same effective technology. Even then, you’ll have to factor in weight and portability!

The good news is that Water-to-Go’s filters are 100% recyclable. The casing and end caps can go in your plastic recycling at home. The grey membrane is fully biodegradable and can go on your compost heap. 

Water-to-Go has already worked on tackling the plastic. The material of the new lids is made from recycled vegetable oil and wood pulp. They are 100% recyclable.

The Eco Active models are made from a bio-based sugarcane plastic instead of fossil fuel. It’s lightweight, durable and recyclable.

Only filters by drinking 

The water filtration is only activated by sucking, which is fine in most cases and for personal use. 

However, it won’t be suitable for activities like cooking outdoors or filling up other bottles with clean water. In this case, Grayl might be a better fit. 

No Water Temperature Regulation

This is more of a personal preference, but the water bottle doesn’t have any insulation. If you’re travelling somewhere hot, the water won’t stay cool. Warm water isn’t fun to drink, so try to keep my bottle out of direct sunlight.

Water-to-Go now sell new insulating bottle carriers made from 3mm thick ‘neoprene’ type material that are designed to keep your water cooler for longer.

The Ultimate Bottle Carrier has a carry handle and shoulder strap, plus a front pouch for small essentials. I’m yet to decide if it will become one of my go-to travel bags.

Recap: Water-to-Go review (video)

Water-to-Go: Is it the ultimate travel water bottle? 

The bottom line for this Water-to-Go review is that the bottle won’t satisfy everyone and every adventure, but in my opinion, it comes pretty close. 

This water bottle is ideal for travellers who want to be more environmentally conscious and reduce their single-use plastic in their packing list.

It also guarantees safe drinking water from any freshwater source around the world at an affordable price point. For me, that’s hard to beat. 

It’s a huge plus if you’re travelling to places notorious for unsafe drinking water or venturing into the wilderness on a camping trip. 

Sure, 75cl is nowhere near the same as a 2-litre bottle of water, but it’s a much more lightweight option, and you can always find an opportunity to refill it. 

Still, I’d like to see a bigger bottle size option one day. 

The bottle might not be 100% perfect in every category, but the new update on the lid proves that Water-to-Go is always pushing for improvements. 

Overall, I’m very impressed with this bottle, and I can’t wait to see how it develops in the future. 

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