Aquamira WATER BOTTLE FILTER for Bacteria

Get outdoors and explore with the Frontier Flow GRN Line Filter Bottle. The Frontier Flow is certified to EPA standards to remove bacteria, and parasites and NSF/ANSI-372 for lead free content. It also reduces chemicals, and chlorine while improving taste and odor. Take a Frontier Flow on your next outing and turn any natural water source into clean, clear, fresh tasting drinking water.
Calculated at checkout

From Mountains To Mondays 

Whether your trek takes you to Everest, across the back roads of America, or through a labyrinth of meetings in your 9-to-5 life, the Frontier Flow will protect your thirst. This go-anywhere, drink-anywhere water bottle accepts any Series II RED Line (Virus) or GRN Line (Bacteria) replacement filter.

Product Features

    GRN Line Bacteria Filter with up to 800 ml/minute flow rate
    Miraguard™ Antimicrobial* Technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media
    Protective Cap helps keep the patented Bite Me™ valve clean
    Filters 100 gallons
    22 oz. (663 mL) bottle
    BPA free, chemical free, and iodine free
    Filter made in the USA



GRN LINE Bacteria Protection

Bacteria Removal ≥ 99.9999%
Cyst Removal     ≥ 99.9%
Meets or Exceeds ANSI/NSF 53

Chlorine, Taste & Odor Removal
Meets or Exceeds ANSI/NSF 42

The Frontier GRN Line Filtered Water Bottle is the perfect way to enjoy great-tasting, filtered water with just a squeeze and a sip. The simple to use design makes it easy to have fresh, clean, filtered water at home, at the office, in the gym, or for all kinds of outdoor activities. When you drink from a Frontier GRN Line Filtered Water Bottle, you are assured of a thoroughly tested and proven level of biological protection that includes protection from bacteria, protozoans, and chemical toxins. The high-flow properties of the GRN Line filter make the Frontier GRN Line Filtered Water bottle as easy to drink from as sipping soda through a straw. With a price point closer to a basic taste and odor filter than a powerful biological grade filter, it’s not only possible but prudent to carry a GRN Line filtered water bottle everywhere you go. For the cost of 20 liters of bottled water, you can enjoy over 300 liters of filtered water with the assurance of GRN Line protection.

The Series II GRN Line filter is designed to be easy to use, lightweight, compact, and reliable. Frontier GRN Line filtration is achieved using Electro-Positive Absorption Technology. The charged micro-glass fibers “pull” organisms as small as bacteria out of the water stream while still maintaining high flow rates and low pressure drops. GRN Line filters have been thoroughly testedby independent laboratories and are proven to consistently remove protozoan bacteria and protozoan cysts to ANSI/NSF – 53 and US EPA standards, without the use of disinfecting chemicals such as chlorine, bromine, or iodine. The addition of sub-micron carbon particles into the filter media increases the absorptive capability required to reduce chlorine and harmful chemicals, bad tastes, and odors to ANSI/NSF – 42 standards. Frontier GRN Line filters provide superior biological protection, high flows, and long service life in a compact, lightweight, and easy to use cartridge

The Frontier GRN Line Filtered Water Bottle is BPA Free, fits into standard cup holders, backpack pockets, and bike cages. The patented Bite-Me valve is soft, friendly, flows like crazy, and stays clean thanks the unbreakable protective cap. It is leak free and will even stay sealed in an airplane overhead bin. The Series II filter design connects easily with a push and a twist. The contoured shape and soft squeezable design make the GRN Line Filtered Water Bottle a natural choice for drinking water protection.



    Frontier™ Series II GRN Line Replacement Filter
    Frontier™ Series II RED Line Replacement Filter


Perfect For



Comparison Chart

Filter Qualities Red Line Grn Line Blu Line
Protection Level Virus Protection Bacteria Protection Parasite Protection
Water Sources Questionable Water Sources
- Polluted Lakes, Pomds, & Streams
- Improperly Stored Water
- Contaminated Municipal Water
Natural Water Sources
- Lakes, Ponds & Streams
- Rain Water
- Stored Water
Known Water Sources
- Municipal / Tap Water
- Potable Water
- Fast moving Stream or Springs
Virus ≥ 99.99% Removal N/A N/A
Bacteria ≥ 99.9999% Removal ≥ 99.9999% Removal N/A
Crypto ≥ 99.9% Removal ≥ 99.9% Removal ≥ 99.9% Removal
Giarda ≥ 99.9% Removal ≥ 99.9% Removal ≥ 99.9% Removal
Taste & Odor Improves Improves Improves
Water Clarity Improves Improves Improves
Chlorine Reduces Reduces Reduces
Chemicals Reduces Reduces Reduces


*Miraguard does not protect users against food borne or disease causing bacteria, viruses, germs or other disease causing organisms.

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