27oz Wide Water Bottle with Loop Cap vs Epic Water Filters Nalgene OG Tom Asta Special Edition: 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

Klean Kanteen

27oz Wide Water Bottle with Loop Cap

PFAS grade

Excellent 100/100

Overall grade

Excellent 92/100

Verdict

Buy

Hazard flags

⚑ 2

Material

18/8 stainless steel, no interior coating

Confidence

92%

PossibleCap or closure contamination

PossibleBacterial or mold growth from moisture retention

Epic Water Filters Nalgene OG Tom Asta Special Edition

Nalgene

Epic Water Filters Nalgene OG Tom Asta Special Edition

PFAS grade

Good 70/100

Overall grade

Good 58/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Polypropylene or polyethylene (filter cartridge); BPA-free plastic body

Confidence

68%

PossibleBacterial growth and biofilm in filter media

PossiblePolypropylene particle shedding if damaged or heated

PossibleCarbon dust inhalation during installation

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 Nalgene.
  • We flag Bacterial growth and biofilm in filter media, Polypropylene particle shedding if damaged or heated and Carbon dust inhalation during installation on the Nalgene and not on the Klean Kanteen.
  • The Klean Kanteen is 18/8 stainless steel, no interior coating where the Nalgene is Polypropylene or polyethylene (filter cartridge); BPA-free plastic body, 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: 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