I used to do customer support for a water filtration company so I know a little about this stuff. Finding a good portable filtration system isn’t easy, but can be done. I personally have two types…
Steripen UV filter
MSR MiniWorks pump system
The Steripen just sterilizes the water.. no filtration involved. But is very easy to carry. You normally combine that with a cheap carbon water bottle filter combo. The MSR system is a bit bulky and heavy.. about the size and weight of a full water bottle, so it would double the size/weight of your water storage equipment. Best for backpacking or camping, which is when I use it.
Here’s a decent guide to show different types and needs..
I looked up some bottles, and the one that Creek uses I watched a few videos on. The folks in the videos just filled it from the rivers and just started drinking. It really has my interest. The filtration system is really good and you can clean them without having to buy a new filter.