27oz Wide Water Bottle with Loop Cap vs Bottle Swig Top 23oz Insulated Stainless Steel Water Bottle with Free Filter Straw: 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
LARQ
Bottle Swig Top 23oz Insulated Stainless Steel Water Bottle with Free Filter Straw
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePlastic component leaching (cap, valve, filter housing)
LikelyBacterial growth in filter housing
PossibleMicroplastics from filter material or cap degradation
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 LARQ.
- We flag Plastic component leaching (cap, valve, filter housing), Bacterial growth in filter housing, Microplastics from filter material or cap degradation and Off-gassing or odor from new plastic components on the LARQ and not on the Klean Kanteen.
- The Klean Kanteen is 18/8 stainless steel, no interior coating where the LARQ is Stainless steel interior, plastic cap/swig top, which is most of the difference in these two grades.
Both products run through the same public rubric: 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