No products in the basket.

Frequently asked Questions

  • 3 in 1 technology filter
  • Filters
  • Using Your Bottle
  • Environment
  • Charity
  • Health
  • Reset Filters

What are Total dissolved solids (TDS)and are they harmful ?

Total dissolved solids (TDS) are the amount of organic and inorganic materials, such as metals, minerals, salts, and ions, dissolved in a particular volume of water; TDS are essentially a measure of anything dissolved in water that is not an H2O molecule. So not all TDS is bad!

“Our filters are built with the specific aim of removing harmful microbiological contaminants and harmful heavy metals and chemicals. They are neither designed nor built to remove all TDSs. In fact, the technology delivers a minute positive electrostatic charge which works like a magnet in the filter attracting and trapping harmful elements even as small as viruses. Given this charge is positive, positively charged salts, which are beneficial for our bodies, pass through the filter. Calcium and magnesium salts are examples that would be ‘filtered’ out by other technologies.
At no stage has Water-to-Go advertised nor would we ever claim to remove all TDSs. We are internationally tested and validated on three continents. Results show we filter heavy metals, naturally occurring contaminants such as raw arsenic and cadmium, chemicals such as Chlorine and Fluoride and all microbiological contaminants including viruses.”


What is the recommended daily water consumption?

The World Health Organisation (WHO) recommends we drink two litres of water per day. therefore in daily normal use, our 130-litre filter  (50cl bottles) will last for approximately 60 days or two months. Our 200-litre filter (all other bottles) will last for 100 days or three months.

What is the shelf life of a brand new filter?

Without activating the filter, in the original packaging, our filters will have a ‘shelf life of three years.’ The nanotechnology in our filters is activated by contact with water, therefore before use, it is important to keep filters in a dry place

Can the filter be frozen?

No, the filter will not work effectively if it is frozen. If the filter does get frozen, make sure that is it fully defrosted (by filling the bottle with tepid water) before using it again. You can still fill the bottle with snow, ice etc and use the bottle to cold climates but it is important to ensure the filter doesn’t get frozen by keeping it in a bag, sleeping bag, close to your person etc.

How long do the filters last?

The active life of our filters is determined by the quantity of water passing through the filter, not by the amount of time it is in use.
Our 50 cls bottles have a 130-litre filter. Our 75 cls and active bottles have a 200-litre filter

What makes Water-to-Go different from everything else?

Water-to-Go filters combine 3 different technologies to eliminate over 99.9% of all microbiological contaminants including viruses, bacteria, chemicals and heavy metals from any non-saltwater source in the world. Our cutting edge technology, as well as our price per litre (5p), makes Water-to-Go unique and different to everything else on the market. Learn more here

How do you activate the filter?

The filter must be wet thoroughly to activate the technology; drinking before the filter is fully wet can lead to unfiltered water passing through the membrane. 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. Learn more here.

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 grey membrane can then go on your compost heap and biodegrade. Learn more here.


How does it work?

Water-to-Go uses three different technologies forged together in one filter to filter over 99.9% of all contaminants in water. The medium used in the filter was designed for the NASA space programme and consists of:

A) Filter medium with one of the smallest pores sizes ever developed for water filtration
B) The traditional technology of activated carbon particles (that reduce bad taste and odours) used within the filter medium so that it is much more effective as there is less adhesive holding the carbon in place thereby providing a greater surface area for the carbon to work
C) The medium releases a positive hydrostatic charge when it comes into contact with the water

No other water filter technology combines these three technologies and delivers results at low cost.

Learn more here

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 odours.

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

Learn more here


Can you brand the bottles for charities and companies?

Yes; we can make bespoke bottles using your logos. 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 admin@watertogo.eu.

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 FDA (Food and Drug Administration) in the USA. Our core guiding principles (see Our Mission. ) are to protect people and the planet.

Can I put my bottle in the dishwasher?

The 75cl Bottles are dishwasher safe (bottle only – lid is hand wash only). The 50cl GO! Bottles & 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 for the Polio Virus – 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.

Will the filter clean urine?

Whilst the filter could be used to filter urine in extreme emergencies, Water-to-Go strongly recommends against filtering and consuming urine.

Furthermore, Water-to-Go filters are intended to remove contamination from water. Filters will become inefficient if used with additives such as isotonic powders, cordials, juices etc.

What are the dimensions and weight of the bottles?

The bottles are very compact and aren’t too bulky so should fit in standard backpack side pockets and standard bike racks or cages. The 75cl (black) bottles are 22cm high and the circumference of the widest part of the bottle is approximately 27cm. The 50cl (clear) bottles are 20cm high and circumference of the widest part of the bottle is approximately 25cm.

The 50cl bottle weighs 98g (empty with dry filter).
The 75cl bottle weighs 138g (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 75cl (black) bottles include a larger filter that is effective for 200 litres (3 months of constant use) whereas the smaller (clear) 50cl GO! bottles have a smaller filter that is effective for 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 non-saltwater 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.

We have further test results coming in from additional laboratories in Europe.

How much per litre would water cost via your bottles?

For users of the 75cl water bottle, 4 replacement filters a year, would provide 800 litres of water which would cost around 4.5p per litre for the filters used.

For users of the 50cl water bottle, 6 replacement filters per year processes 780 litres of water which would cost just over 6p per litre.

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, also 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?

There are three ways: –

  1. If you have a 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.
  2. If you have a 75cl bottle and have registered with Water-to-Go, an email will be sent to remind you after three months.
  3. One of the three technologies in our filter (the one which controls the taste and the smell) is carbon. We programme just enough carbon into the filters to expire at either 130 litres (for the 50cl filters) or 200 litres (for the 75cl filters). The filter will still be filtering bacteria, cysts and harmful contaminants; the water after this time 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 I don’t use my bottle everyday will it still only last for 2-3 months?

No. The filter is good for 130 litres when using the 50cl Water bottle or 200 litres for the 75cl water bottle. In practical terms, this means that you can fill up the 50cl Water bottle 3-4 times a day, every day and the filter will last 2 months. Using the 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.

We have created a short video showing how to activate your filter.

How do I activate the filter timer on my 50cl water bottle?

We’ve created a video demonstrating how to activate your Timestrip. Click here to watch.


Is it ready to go?

Yes. All you need to do is ensure the filter is wet through and flush once to activate it. We suggest the first time you use a new filter you 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.

We have created a short video showing how to activate your filter.


0 items in your basket
Go to Basket