27oz Wide Water Bottle with Loop Cap vs Filtered Hiking Water Bottle: which is safer?
Klean Kanteen 27oz Wide Water Bottle with Loop Cap is our pick, better on PFAS and on the overall hazard picture.
Our pick
Klean Kanteen
27oz Wide Water Bottle with Loop Cap
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCap or closure contamination
PossibleBacterial or mold growth from moisture retention
Filtered Hiking Water Bottle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyBacterial growth in filter housing if maintenance neglected
PossibleFilter cartridge material composition unknown
PossiblePlastic bottle leaching under stress or UV exposure
Where these two actually differ
- We flag Cap or closure contamination and Bacterial or mold growth from moisture retention on the Klean Kanteen and not on the .
- We flag Bacterial growth in filter housing if maintenance neglected, Filter cartridge material composition unknown, Plastic bottle leaching under stress or UV exposure and Filter effectiveness and contaminant breakthrough not independently verified on the and not on the Klean Kanteen.
- The Klean Kanteen is 18/8 stainless steel, no interior coating where the is Plastic bottle with activated carbon and membrane filter, which is most of the difference in these two grades.
- The gap is 30 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More portable water bottles, see the full ranking