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Best Water Filters of 2021 – Reviews & Guide

Public drinking water supplies are teeming with more than 90 chemical, microbial and radiological contaminants, many of which pose a serious health risk. I’m not surprised if you want to remove these contaminants from your water as quickly and effectively as possible.

I’ve been working in the water filter industry for nearly a decade, writing for and other key water industry publications, including HowStuffWorks, Water Quality Product Magazine, Water and Wastes Digest Magazine, Sawyer Products.

When there are so many water filters available nowadays, a filter has to offer something really special to make it onto this list. After so long in this industry, I’m well aware of the products that are consistently favorites amongst customers, based on reliability, performance, contaminant removal capabilities, quality of construction, filter capacity, and much more.

In this guide, I’ve shared:

  • The best water filters worth investing in this year
  • The most popular filtration methods you should know about
  • Things you should consider before purchasing a water filter

Continue reading the comprehensive guide written by Brian Campbell here


May 7, 2022

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Water Filter Guru

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We want to help everyone have access to fresh, clean and healthy water!

Water is necessary to all walks of life on our beautiful planet and is something each and every one of us needs to thrive and live healthily. We humans need to be drinking at least 64 ounces of water each and every day!

At we believe everyone should have access to this essential resource. Our mission is to help you find information, products and solutions to address your water quality needs.


My only complaint is that eventually, backflushing won’t be enough. These can clog up after some time and no amount of back flushing will fix its low flow. I went through 2 on the AT. However, it will attach to Smart Water Bottles and most bladders!

Anna Hamrick


Built for backcountry reliability and portability, the Sawyer Squeeze filter is our pick for the best portable water purifier.

Pete Ortiz


The Sawyer Squeeze was (by far) the most common Pacific Crest Trail water filter this year – for the fifth year in a row. It’s a $39, 3 oz / 85 g hollow fiber filter that rids your drinking water of protozoa and bacteria (and floaties). It can be used with Sawyer bags (included with the filter) or with compatible water bottles (Smartwater is the bottle of choice for many hikers).

Halfway Anywhere
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