I remember the days of dropping large white water purification tablets into the murky liquid sloshing around in my Sigg flask then attempting to slake my thirst on something that tasted like I imagine a chemical toilet would.

Then came the filtration systems against pesticidal, bacterial or indeed chemical contamination.

Then came Water-to-Go Filter Bottle.

Water-to-go is an all in one filtering solution. You simply fill the flask with water, screw the top on and drink. By sucking on the flip-up straw you draw the water through a filter whose incy-wincy, teeny-weeny pores (stop me if this is too technical) filter out erm… just about everything.

In their own words:

"The 3-in-1 system in our filters was developed at the behest of NASA and they are constructed utilizing nano technology. Nano alumina along with activated carbon and other filtration ingredients are utilized to bring about this amazing new patented process. The nano alumina emits a positive charge when wet and attracts the negative charged contaminants of protozoa, bacteria and virus. This revolutionary new process will make every drop of water more safe and refreshing. Finally a filter that really does what its supposed to do."

So how do you tell if it works?

This may come as shock but I am no scientist so, as the old saying goes; the proof of the filter is in the drinking.

A review of the Water-to-go Water filtration bottle.

COST: From £24.89 (39.99 USD) on Amazon

FEATURES:

Unique technology eliminates over 99.9 percent of all Bacteria, Viruses, Chlorine, Fluoride and Heavy Metals such as Lead for clean drinking water.
75cl capacity
Weight of 138g (with filter in)
BPAfree / all materials and FDA approved
Bottle Dishwasher Proof (Lid is handwash only)
Filter remains effective for approx. 200 Litres which is about 3 full bottles per day for 3 months.
It comes in different coloured sleeves (yes, this totally is a feature in my book)

testing:

In the past few months I have used this flask on several occasions in the following locations:

A one month adventure road trip exploring the wilderness areas of Serbia and Montenegro.
A day hike in the Tramuntana Mountains of Mallorca
A few days climbing in the Alps
Day walks and wild camps in the UK

I drank water from all the places you see below and look how insanely happy I appear!

In truth I didn’t find any running water to test in Mallorca. It came from a tap. Realistically our summer adventure road trip was its greatest test. I drank water from mountain streams, waterfalls and even something a little more stagnant in Durmitor National Park. It all tasted absolutely clean and fine.

And I lived. My daughter also lived. And she finds this flask especially exciting because it does require a little effort to suck the water out and therefore makes an amusing noise. No complaints - it is going through some NASA-grade filtering system.

Conclusion:

How bad was the water I drank? well, its hard to tell. Some of it was bit manky looking but generally it was quite fast flowing so you never really know.

What I would say is that it always tasted clean, I have not suffered any problems and it is supremely simple to use; light, squeezy, healthy and easy. My only criticism is that it might be slightly squeezier (is that even a word?), although I think this may be done on purpose to prevent too much pressure on the top.

shop for the Water-to-Go filter bottle on Amazon >