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Water Treatment

Need help getting started? Read our four-part guide to backcountry water treatment:
Part 1: Proper Hydration
Part 2: Keeping Your Water Supply Safe
Part 3: What’s in Backcountry Water?
Part 4: Methods for Making Water Safe

The best water treatment, reviewed and curated by the Trailspace community. The latest review was added on June 1, 2021. Stores' prices and availability are updated daily.

user rating: 5 of 5 (6)
Platypus GravityWorks Filter System 2L Pump/Gravity Filter
$90 - $109
user rating: 5 of 5 (5)
MSR Guardian Purifier Purifier
$350
user rating: 5 of 5 (4)
Katadyn Combi Pump/Gravity Filter
$200
user rating: 5 of 5 (3)
Grayl GeoPress Bottle/Inline Filter / Purifier
$90
user rating: 4.5 of 5 (29)
Sawyer MINI Bottle/Inline Filter
$22 - $48
user rating: 4.5 of 5 (20)
Platypus GravityWorks Filter System 4L Pump/Gravity Filter
$110 - $119
user rating: 4.5 of 5 (16)
Katadyn Pocket Pump/Gravity Filter
$370
user rating: 4.5 of 5 (9)
Aquamira Water Treatment Drops Chemical Treatment
$15
user rating: 5 of 5 (2)
LifeStraw Original Bottle/Inline Filter
$20
user rating: 5 of 5 (2)
HydroBlu Versa Flow Bottle/Inline Filter
$22
user rating: 4.5 of 5 (6)
Katadyn Micropur MP1 Purification Tablets Chemical Treatment
$10 - $14
user rating: 4.5 of 5 (6)
Katadyn BeFree 0.6L Bottle/Inline Filter
$40 - $44
user rating: 4.5 of 5 (3)
Grayl Ultralight Bottle/Inline Filter / Purifier
$70
user rating: 4.5 of 5 (2)
Aqua Research H2gO Prime Purifier
$99
user rating: 5 of 5 (1)
Katadyn Gravity Camp 6L Pump/Gravity Filter
$63 - $89
user rating: 5 of 5 (1)
Katadyn Exstream/MyBottle Virustat Kit Accessory
$35
user rating: 5 of 5 (1)
Katadyn Gravity BeFree 3.0L Pump/Gravity Filter
$60 - $69
user rating: 4 of 5 (51)
Katadyn Hiker PRO Pump/Gravity Filter
$50 - $84
user rating: 4 of 5 (32)
Sawyer Squeeze Bottle/Inline Filter
$29 - $49
user rating: 4 of 5 (31)
Katadyn Hiker Pump/Gravity Filter
$70 - $74
user rating: 4 of 5 (26)
SteriPEN Classic UV Water Purifier Purifier
$80
user rating: 4 of 5 (9)
SteriPEN Adventurer Opti Purifier
$100 - $109
user rating: 4.5 of 5 (1)
Sawyer Micro Squeeze Bottle/Inline Filter
$29
user rating: 4.5 of 5 (1)
Katadyn Carbon Cartridge Accessory
$25
user rating: 4.5 of 5 (1)
LifeSaver Liberty Bottle/Inline Filter
$83
user rating: 4 of 5 (2)
Sawyer Select S1 Bottle/Inline Filter
$60
user rating: 4 of 5 (1)
MSR Thru-Link Bottle/Inline Filter
$40
user rating: 4 of 5 (1)
Potable Aqua Pure Purifier
$100
user rating: 4 of 5 (1)
Katadyn Hiker/Hiker PRO/Base Camp Replacement Element Accessory
$40 - $74
user rating: 3.5 of 5 (42)
MSR MiniWorks EX Pump/Gravity Filter
$90 - $109
user rating: 3.5 of 5 (30)
Katadyn Vario Microfilter Pump/Gravity Filter
$89 - $99
user rating: 3.5 of 5 (23)
Katadyn Base Camp Pump/Gravity Filter
$70
user rating: 3.5 of 5 (17)
MSR HyperFlow Microfilter Pump/Gravity Filter
$100 - $119
user rating: 3.5 of 5 (3)
Katadyn Drip Gravidyn Pump/Gravity Filter
$295 - $317
user rating: 3.5 of 5 (1)
MSR Trail Base Water Filter Kit Pump/Gravity Filter
$140 - $149
user rating: 3.5 of 5 (1)
SteriPEN Ultra UV Water Purifier Purifier
$110 - $119
user rating: 3 of 5 (3)
LifeSaver Jerrycan Pump/Gravity Filter
$290
HydroBlu Go Flow Water Gravity Bag with Versa Flow Water Filter Pump/Gravity Filter
$50
user rating: 3 of 5 (1)
Sawyer Select S2 Bottle/Inline Filter
$80
Platypus Meta Bottle + Microfilter Purifier
$29 - $41
user rating: 2.5 of 5 (2)
LifeStraw Mission Gravity Water Purifier Pump/Gravity Filter
$130
user rating: 2 of 5 (4)
Katadyn Mini Pump/Gravity Filter
$110
NEW!
Platypus QuickDraw MicroFilter Pump/Gravity Filter
$30 - $39
Aqua Research H2gO Global Purifier
$99
NEW!
MSR Guardian Gravity Purifier Purifier
$250
MSR Home Emergency Water Filter Bottle/Inline Filter
$40
user rating: 5 of 5 (13)
First Need Deluxe Water Purifier Purifier
user rating: 5 of 5 (4)
First Need Deluxe Water Purifier XL Purifier

Recent Water Treatment Product Reviews

rated 4 of 5 stars
Grayl Ultralight

The Grayl UL is heavier and more expensive than in-line filters like the Sawyer Mini or Squeeze. But when we consider that it doesn’t require a container and also filters out viruses and chemicals/odors, it shows some advantages. It’s an all-in-one solution, good for outdoor use, but perhaps even more for emergencies: for those qualities I keep one new in my bug-out-bag. I see the Grayl UL as more of an all-in-one solution to water treatment and storage than a simple filtration system. I can… Full review

rated 5 of 5 stars
Grayl GeoPress

For day hikers and overnight adventurers, fill this beauty up with water at the start of your hike and when you find a water source, drink what you have and refill the Grayl. Original reviews talked about how difficult it is to press (filter) the water, think of a french press coffee maker, not hard at all and I am quite small. I love this simple, perfect system This is an easy to use, effective, fast source of filtered water. The capacity of fresh water that is also stored directly in the french-press… Full review

rated 5 of 5 stars
Grayl GeoPress

The easiest and likely fastest filter of its caliber on the market. Takes absolutely disgusting water and turns it into purified clean, tasty water. Wife and I use this on camping trips. So super simple and fast, very tough as far as the hardware pieces go. We like to backcountry hike and camp. The $80-$90 cost for this filter, with regard to the ease and safeness of the water you get, is worth each and every penny.  Full review

rated 5 of 5 stars
HydroBlu Versa Flow

Excellent backpacking water filter, super versatile and convenient, and definitely my favorite so far. Has a significantly better flow rate compared to the Sawyer Mini. It can be adapted to several different systems. It's threaded so you can screw it directly onto a bottle, or onto a bladder to use as a squeeze through filter system or hung for gravity filter setup, and you can put a hose on it for in-line filtering. I prefer to use mine screwed directly onto a dirty water bladder (I've found CNOC… Full review

rated 4 of 5 stars
Sawyer MINI

Sawyer Mini Water Filter is a Must Have for every Hiker? - Full Review + Tips In this video we are going to review our one and only water filter that we have, the Sawyer Mini. We have used it from the very start of our backpacking and hiking journey and now we are ready to share all our thoughts about it. We are going to look at the general specs of it, its features, pros and cons, how we use it on the trail and some tips and tricks we found with it. Watch the full video here:   Disclaimer: we… Full review

rated 2 of 5 stars
Katadyn Pocket

Consistency in filtering is an issue. Weight is heavy and constant cleaning of filter, along with difficulty in usage, make this a "miss" for filter choice. I'm confident of the effectiveness in filtering—I have drank some poor quality water and never got sick. I have had lots of problems though. It sometimes clogs and is very difficult to pump. It requires scrubbing of the ceramic filter very often, meaning you have to take apart to clean, lose pressure, and risk having it not work properly. Full review

rated 5 of 5 stars
Grayl GeoPress

I was gifted a Grayl by someone who knows that I have occasionally taken risks with drinking stream water on hiking trips, so far so good but it drove them crazy. This filter is highly effective, durable, no parts to hunt around my pack for, will suffice for day hikes and longer hikes and acts like a great water bottle. I love it! Full review

rated 4.5 of 5 stars
Grayl GeoPress

I have been testing the Grayl GeoPress Purifier, a new, large capacity water filtration bottle, while canoeing, canoe camping, and day hiking this summer and fall. For the past three years, I have used a Grayl Ultralight Water Filter bottle, to provide clean and safe water for me and my dogs while canoeing and camping. I reviewed that bottle here on Trailspace on 10/14/18, and since then have continued to carry that bottle in my canoe bag, and occasionally, in my backpack side pockets. The new GeoPress… Full review

rated 4.5 of 5 stars
Sawyer Micro Squeeze

The Sawyer Micro Squeeze is a very lightweight, compact, and versatile water filtration system with a long lifespan that will help keep you safely hydrated on the trail. You can drink directly from the water source with the included straw or filter water from the included bladder using the squeeze method or from disposable water or soda bottles using the gravity method. Once filtered it's ready to drink or store in the vessel of your choice, and you can even direct line to hydration packs. Sawyer… Full review