GRAYL Anti-Virus Emergency Water Filter Bottle For Outdoors

Last updated date: September 26, 2022

DWYM Score

9.5

GRAYL Anti-Virus Emergency Water Filter Bottle For Outdoors

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We looked at the top Water Filters For Outdoors and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Water Filter For Outdoors you should buy.

Update as September 23, 2022:
Checkout The Best Water Filter For Outdoors for a detailed review of all the top water filters for outdoors.

Overall Take

Fill this water filter for outdoors with freshwater and it will begin removing everything from bacteria to chemicals and heavy metals. It's perfect for camping trips, as well as emergency preparedness kits. You can even get the filter in oasis green, Bali blue or coyote amber.


In our analysis of 16 expert reviews, the GRAYL Anti-Virus Emergency Water Filter Bottle For Outdoors placed 3rd when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

PURIFY WATER ANYWHERE: Make sketchy water clean to drink. Ideal for outdoor adventures (hiking, camping, backpacking, fishing, hunting, bushcraft), global travel, and survival situations. Simply – Fill. Press. Drink! REMOVES ALL PATHOGENS: Viruses (e.g. rotavirus, norovirus, hepatitis A), bacteria (e.g. E. Coli, salmonella, dysentery), and protozoa (e.g. giardia, cryptosporidium, amoebae). FILTERS particulates (e.g. sediment, microplastics) and adsorbs volatile organic compounds (VOCs), PFAS, chemicals, pesticides, herbicides, heavy metals, flavors and odors. UNRIVALED SPEED & EASE: Purifies 24 oz (710ml) of water. Requires no setup time, pumps, hoses, sucking straws, batteries, chemicals, or prolonged waiting. Effortlessly purify from any spigot, hotel sink, murky river, lake, or well. EMERGENCY PREPARATION: Equipped with replaceable purifier cartridge good for 65 gallons (250L). Perfect for home or car prep kit so you are ready for any natural disaster, water emergency, or survival situation.

Expert Reviews

User Summarized Score

9.6
3,077 user reviews

What experts liked

What experts didn't like

An Overview On Water Filters For Outdoors

Whether you are hiking in the remote backcountry or traveling abroad, having access to clean drinking water is essential. Packing a portable water filtration system is one of the best ways to protect yourself from contaminants like bacteria, viruses and heavy metals to ensure you always have refreshing, safe water on hand.

There are many different types of filtration systems, from electric, pump and gravity-powered varieties, to straw-style and bottle filters. No matter which one you choose, every device should have an internal component, like a cartridge, that strains out debris, protozoa and bacteria using microscopic pores. Over time and after a certain number of uses, the component must be cleaned or replaced to keep working as intended.

Many systems also include activated carbon and pre-filter elements. The carbon removes colors, odors and nasty flavors like chlorine, and reduces contaminants like pesticides and man-made chemicals. Meanwhile, the pre-filter removes large particles — think: silt, leaf debris and sediment — before the water reaches the second component, which strains out the microscopic contaminates. A pre-filter can help improve the device’s water flow rate and extend the life of all of its elements.

Some of the most common portable water filtration systems include the pump, which draws water via an intake hose from a stream, pond or other source into a bottle or bag; the squeeze bag or bottle, a reservoir that you squeeze to send the water through a filtration element; and the straw, a literal straw with a built-in element that allows you to safely slurp water directly from the source.

Electric-powered models are the most advanced and can filter over 15 ounces of water per minute.  They draw water from sources using a hole, but no manual pumping is required. While this option is also the priciest, it is a great investment for those who have access to a power source, batteries or a mobile charger.

The Water Filter For Outdoors Buying Guide

  • There is a difference between a water filter and purifier; the former removes physical sediment, bacteria, protozoa and cysts but may not remove smaller viruses, like norovirus and hepatitis A. However, while a purifier may remove all types of contaminants, it doesn’t remove sentiment.
  • Outdoor water filtration systems vary greatly in price.
  • Carefully read the directions that come with your water filtration system; every product works differently and there are precise steps to avoid cross-contamination (mixing untreated water with clean water).
  • For the best results, find water that is as clear as possible before filtering. Even if your device has a pre-filter, sentiment in murky water can slow down the filtration process or make it less effective.