PFAS70/ 100Good
Overall44/ 100Poor
Aquamira Frontier Flow Filtered Water Bottle

Mira · Portable Water Bottles

Aquamira Frontier Flow Filtered Water Bottle

Good

Filtered bottle carries low inherent PFAS risk; verify filter cartridge materials.

Verdict · Buy with careSolid entry-level filter bottle with no established safety issues, but silent PFAS stance and filter replacement discipline are critical.

Plastic housing with carbon-based filter cartridge makes up Aquamira's filtered water bottle. Neither material naturally attracts PFAS.

Check price on Amazon →

We flunk more products than we pass. This one earned its grade. How we grade

Material

Plastic bottle with carbon/activated carbon filter cartridge

Brand disclosure

Brand is silent on PFAS

Lab data

No public lab test

What Aquamira Frontier Flow Filtered Water is made of, ingredients and materials

The Aquamira Frontier Flow uses a plastic bottle body (material type not publicly specified by brand, likely polypropylene or tritan) paired with an activated carbon filter cartridge. Activated carbon itself is inert and food-safe; the risk lies in the plastic housing leaching and filter cartridge construction quality. No public data on this specific product's plastic resin composition or whether it contains BPA/BPS alternatives.

What’s concerning

♾️

Category baseline

The starting point for this type of product, before anything specific to this product is counted.

75/ 100
♾️

No PFAS disclosure

No public statement from the brand about PFAS in this product.

85/ 100
🍼

BPA & bisphenols

Mira does not publicly disclose plastic resin type or certification (BPA-free, phthalate-free). Low risk if bottle is polypropylene or Eastman Tritan, higher if virgin or recycled PET without explicit declaration.

Source, FDA ↗
70/ 100
⚠️

Bacterial growth in filter cartridge and housing

Any filtered water bottle risks biofilm if cartridges are not replaced on schedule or if bottle sits wet for days. This is not a manufacturing defect but a maintenance failure; improper care degrades safety over time.

20/ 100
🏭

Filter cartridge material composition (activated carbon quality and binder)

Brand does not disclose whether carbon is coconut-derived, coal-based, or includes synthetic binders/resins. Lower-grade cartridges may shed fine carbon particles or off-gas volatile compounds initially.

70/ 100

What’s reassuring

✅

Base material not linked to PFAS

The main material recorded for this product is not one associated with PFAS.

100/ 100
✅

Seal and gasket degradation

No reported issues with this model's silicone or plastic seals, but long-term exposure to mineral-heavy water can degrade elastomers over 1-2 years, allowing leakage and microbial entry.

95/ 100

The full breakdown

The brand's record and disclosure

Mira (Aquamira brand owner) provides minimal public safety documentation on material sourcing or third-party testing. No major recalls or safety controversies are on record for this model. The brand does not publicly state PFAS reduction claims or filter material sourcing, leaving verification gaps for consumers concerned about PFOA or other fluorinated compounds in the filter media itself.

How it compares in its category

Filtered water bottles occupy the mid-safety tier, lower risk than unfiltered plastics (no constant thermal stress) but higher maintenance burden than simple reusable bottles. Aquamira is a recognized brand in outdoor/portable filtration; competitors like LifeStraw and Grayl publish more detailed material specs. This product lacks the transparency of premium brands but avoids known problematic designs (e.g., silicone seals with uncured resin odor).

If you buy it

Replace filter cartridges every 100-150 gallons or per manufacturer guidance; delay invites bacterial biofilm in the filter housing. Do not boil or expose the bottle body to prolonged heat above 65C (150F), as unknown plastic formulations may leach. Store dry between uses to prevent mold colonization. Rinse the entire bottle and cap weekly to prevent stagnant water degradation.

What we don’t know

Basis
Model estimate, 62% confidence, not a lab result
Lab test
None on record for this exact product
Brand statement
Mira has made none

Formulations change between production runs, so check the current label. How we grade.

Better-graded alternatives in Portable Water Bottles

Klean Kanteen 27oz Wide Water Bottle with Loop Cap

Klean Kanteen

27oz Wide Water Bottle with Loop Cap

100ExcellentPFAS grade
  • 18/8 stainless steel, no interior coating
  • The brand calls it PFAS-free, which we have not verified
  • Cap or closure contamination

2 hazards checked on this product. See all of them.

Klean Kanteen Rise Classic Insulated Water Bottle

Klean Kanteen

Rise Classic Insulated Water Bottle

100ExcellentPFAS grade
  • stainless steel body, foam insulation, stainless steel cap
  • The brand calls it PFAS-free, which we have not verified
  • Cap gasket and seal contamination
Klean Kanteen Classic Flip Seal Sport Cap

Klean Kanteen

Classic Flip Seal Sport Cap

95ExcellentPFAS grade
  • Stainless steel bottle, plastic flip cap
  • The brand calls it PFAS-free, which we have not verified
  • Plastic cap degradation and microplastic shedding

3 hazards checked on this product. See all of them.

More portable water bottles grades

How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.