07/15/2026
Filtration
Water must always be treated as suspect. Water Disinfection Tablets (often mistakenly called Water Purification Tablets) are one solution, often best used on viruses in clear water. However, for most other situations, I prefer the convenience of filters. I have used well over 30 makes and models over the last 25 years. Swipe on the photos to see what my opinions are on the 5 systems I use the most.
1. The Plain Jane Rag and Can. The oldest method I've ever used, taught to me by my mentor when I was first heading to the bush alone as a kid. Bring a cookpot/billycan, bandana/rag, and some cord. Drape the cloth over the opening of the pot, and lash it in place. Scoop water from the clearest source you can possibly find, straining out obvious debris with the fabric. Remove the fabric and boil the water. Simple. Can outlast the majority of commercial filters. Definitely does it's job. But now you need to make a fire, and either drink tepid water, or wait a lifetime until it cools down.
2. The Ultralight System. This is a Platypus Quickdraw with 1L reservoir bag (can choose to carry a larger one if you want). This could be a Sawyer Squeeze or Mini, or any filter that can hook up to a 28mm water bottle. This is the method sworn by many a thruhiker and Ultralight backpacker. Other than being kinda fiddly to set up and “push” the water from the reservoir to the bottle, it's really not too difficult, albeit, a bit of a pain in the butt. You need a bottle with a 28mm thread, so Smartwater, or this old Gatorade Water bottle of mine (going on 3 years at least) will do. Do not buy the “Ultralight 28mm Hiking water bottles” from CNOC or Smartbottle. Any “single use” bottle from a convenience store that has a 28mm thread will do, and is not as single use as you think. My Gatorade Bottle has survived many trips (and many falls) over the years and has served me fine. Light? Yes. Fast? Sorta. Dependable? Yeah. Durable? Somewhat.
3. The Gimmicky Grayl. Basically a French Press for swamp water. I am gonna be honest.. I have used this for a while now, and have not been impressed. Pretty sure all of the IG Influencers and YT Creators who swear by these things are either getting paid to, or it is all a conspiracy to gaslight me into liking this thing. Because I do not understand the hype. It is almost as bulky and heavy as my full sized camping filters, and it takes a whole lot more effort to use. Yes. The idea of a water bottle with a built-in water filter is great on paper. But man, this isn't even carrying a full litre of water, and it just isn't that convenient. If you like it, more power to you, and godspeed. But I end up leaving this thing at home, every single time I have the option to take it.
4. The Portable Camping Filter. There are a lot of options for this category, but for the last 13 years, my high-speed-low-drag camping filter has been the MSR Hyperflow. Very light, very fast to fill a litre, reasonably durable, easy to deploy. I have taken this to the Amazon, to the High Desert, to the Rockies, to the Thai rainforest and to the Boreal Backcountry. It is dependable and easy to use. Bulkier than the Ultralight options, but way more comfortable to use, especially on uneven terrain, or when standing in the middle of a jungle river. When Solo, or in small parties hiking over a lot of terrain, I always grab this.
5. The Base Camp Gravity Filter. In this case it's the Platypus GravityWorks, and to be frank, in 15 years I have yet to find a gravity filter that impresses me as much as this one. Easy to use, durable as all Hell, easy to clean, and can give you a gallon of safe good tasting water in a few minutes. The only real downside to it, is the need for head (vertical column height that produces pressure to force the water through the filter). So if you're on flat terrain with no way to elevate the dirty water reservoir, you're gonna have to stand there and hold it a few feet off the ground for a while. Other than that though, it is bulky and heavier than the other options, making it better for group trips, where its capacity will be better appreciated, or in a Base Camp setting, where its size is sort of irrelevant. Beyond that though, the convenience, luxury and ease of use cannot be beat.