How do I activate the filter?

It is important you activate the filter before first use. The filter must be wet thoroughly to activate the filter technology. We suggest the first time you use a new filter to fill the bottle up and turn it upside down, submerging the filter for a minimum of 15 minutes. Watch the short video below to see how to activate your filter.

What should I do with the filters once I have finished with them?

The Water-to-Go filters are 100% recyclable so you can dispose of them sustainably. The casing and end caps can go in your plastic recycling, and the gray membrane can then go on your compost heap to biodegrade.


What are the three technologies Water-to-Go uses?

1) Water-to-Go uses mechanical filtration; a very small pore size which stops contaminants passing through.
2) Electrical (by a positive charge) which reduces the pore size even further and attracts the contaminants like a magnet would, trapping them inside the filter.
3) Finally our filters use carbon but instead of using adhesives to glue the carbon particles together (which vastly reduces the carbon’s efficiency) it is contained within the membrane, helping to reduce contaminants whilst eliminating bad tastes and odors.

Try filtering water from your domestic filter like Brita and taste the difference!


Can you brand the bottles for charities and companies?

Yes. We can make custom bottles using your logo. We have done this for several large organizations and charities able to guarantee a large initial order to cover the design costs of putting your logo on a Water-to-Go bottle. For more information please contact [email protected]


Are Water-to-Go products BPA-free?

Yes. All the product components (bottles, lids and filters) are BPA free and all materials used are approved by the US Food and Drug Administration. Our core guiding principles are to protect people and the planet.

Can I put my bottle in the dishwasher?

The 26oz/75cl bottles are dishwasher safe (bottle only – lid is hand wash only). The 18oz/50cl bottle and lid are hand wash only. In all cases, please ensure you remove the filter before cleaning.

What is the pore size of the filter (in microns)?

When we talk about pore size we refer back to standard technology. The mechanical restriction of the size of the pores has been the traditional measure of what a filter will eliminate. This is not the case with Water-to-Go. We have a unique combination of three technologies, each performs individually but it is the combination that makes us unique. We have a combination of two nano technologies, which not only reduce the pore size to 0.7 microns, but also create a positive hydrostatic charge in the membrane which attract and traps even the smallest of viruses like polio (which can be as small as 0.03 microns). Have a look at our testing page to see our tests – testimony to the fact that we achieve substantial results by the combination of technologies rather than depend on just the mechanical calculation via a limited pore size.

What are the dimensions and weight of the bottles?

The bottles are very compact and should fit in standard backpack side pockets and standard bike racks or cages. The 26oz/75cl (black) Classic bottles are 8.6 inches (22cm) high and the circumference of the widest part of the bottle is approximately 10.6 inches (27cm). The 18 oz/50cl (clear) Go! bottles are 7.9 inches (20cm) high and circumference of the widest part of the bottle is approximately 9.8 inches (25cm).

The 18oz/50cl Go! bottle weighs 3.5 ounces (98g), when empty with dry filter.
The 26oz/75cl Classic bottle weighs 4.9 ounces (138g) when empty with dry filter.

What’s the difference between the 75cl bottle and the 50cl (GO!) bottle?

The differences are the size of the bottle and the filter life. The 26oz/ 75cl Classic bottles include a larger filter that is effective for 53 gallons/200 litres (3 months of constant use) whereas the smaller (clear) 18oz/50cl GO! bottles have a smaller filter that is effective for 34 gallons/130 litres (2 months of constant use). There is NO difference with the filter technology – they both eliminate well in excess of 99.9% of all microbiological contaminants from any freshwater source.

Do you have testing reports?

Yes. You can view these on our website, We have been tested on three continents by internationally renowned laboratories in London, Florida, Bangalore and China.

How does the bottle ‘save the planet’?

By choosing a Water-to-Go bottle you reduce plastic pollution and save resources. Pollution caused by millions of plastic water bottles floating in our oceans damages wildlife and the planetary ecosysytem. Making just one Water-to-Go water bottle instead of a hundred single use single-use plastic water bottles preserves valuable natural resources.  Huge quantities of oil, water and other materials are used in the manufacturing and shipping process of single-use bottles. At the end of their lives, only 12% of plastic bottles are recycled!

Do you filter Chlorine and Fluoride?

Yes. Recent tests show that Water-to-Go filters reduce the amount of chlorine in the water to below detectable levels. Our filters use both alumina nano technology and carbon to filter out fluoride. You can see our testing results here.    You can taste the difference when you drink from a Water-to-Go filtered water bottle.

How do I know when my filter needs replacing?

Filter replacement depends largely on how you use your bottle. For example, the filter in a bottle used to filter chemicals from tap water will last much longer than a filter in a bottle used to filter sediment-laden water from ponds and lakes.

We designed the 18oz/50cl filter to provide 34 gallons (130 liters) of drinking water before replacement and the 26oz/75cl filter to provide 53 gallons (200 liters) before replacement.  After this volume, the water will gradually start to taste and smell as it did before using the Water-to-Go bottle. This is a ‘sensory’ prompt for you to change the filter.

If you have a 18oz/50cl water bottle, and you have set the timer when you began using it, the timer will remind you to replace your filter after two months.


If I don’t use my bottle everyday will it still only last for 2-3 months?

No. The filter is good for 34 gallons (130 liters) when using the 18oz/50cl Water bottle or 53 gallons (200 liters) for the 26oz/75cl water bottle. In practical terms, this means that you can fill up the 18oz/50cl Water bottle 3-4 times a day, every day and the filter will last 2 months. Using the 26oz/75cl water bottle 2-3 times a day the filter will last for 3 months. If you stop using your Water-to-Go filter it will dry out and will need to be re-activated.

To reactivate it just fill the bottle up and turn it upside down, submerging the filter for 15 minutes. Then gently squeeze out the contents until the water runs clear.


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