Klean Kanteen Review, Is Klean Kanteen Non-Toxic?
Klean Kanteen averages 92 out of 100 on PFAS Authority's PFAS and toxin screen across the 20 Klean Kanteen products graded as of October 2026, and all 20 reach its 70 point pass mark.
Klean Kanteen grades Excellent on our four-band scale. On disclosure, the brand claims its products are PFAS-free (self-declared). See what every brand has published about PFAS for how that compares.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
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- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
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- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
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2 hazards checked on this product, all on its full breakdown.
Does Klean Kanteen have PFAS, by category
Which Klean Kanteen products are PFAS-free? Good or better, best-graded first
- 18/8 stainless steel, no interior coating
- The brand calls it PFAS-free, which we have not verified
- Cap or closure contamination. The Loop Cap material composition is not specified in available context. If the…
2 hazards checked on this product, all on its full breakdown.
Klean Kanteen
Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid
- Stainless steel body, silicone gasket lid seal
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation. Silicone gaskets can degrade or absorb food odors over years of use, especially…
3 hazards checked on this product, all on its full breakdown.
- stainless steel body, foam insulation, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Cap gasket and seal contamination. Rubber or silicone gaskets can degrade over time or harbor bacterial…
- Stainless steel bottle, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time. The powder-coated steel Café Cap can chip or flake with repeated…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel body, powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation. The exterior powder coat can chip or scratch with impact or repeated…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, plastic flip cap
- The brand calls it PFAS-free, which we have not verified
- Plastic cap degradation and microplastic shedding. The flip cap experiences mechanical stress from repeated…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, plastic cap and silicone gasket
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation and leaching. Silicone gaskets used in food contact applications are generally…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, bamboo cap
- The brand calls it PFAS-free, which we have not verified
- Bacterial or mold growth in bamboo cap. Bamboo is a porous natural material that can harbor bacteria or mold…
2 hazards checked on this product, all on its full breakdown.
- 18/8 stainless steel body, likely stainless steel or silicone lid
- The brand calls it PFAS-free, which we have not verified
- Nickel leaching from stainless steel, 18/8 stainless steel can release trace nickel in acidic beverages over…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel body, plastic cap
- The brand calls it PFAS-free, which we have not verified
- Plastic cap degradation from heat stress. Polypropylene caps can weaken or warp if repeatedly exposed to…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel body, plastic cap
- The brand calls it PFAS-free, which we have not verified
- Microplastics. The polypropylene or polyethylene-based cap may degrade very slowly with UV exposure or…
2 hazards checked on this product, all on its full breakdown.
- stainless steel bottle with powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation. Baked polymer coatings can chip or crack from impact or abrasion. Once…
- 18/8 stainless steel body, thermoplastic cap
- The brand calls it PFAS-free, which we have not verified
- Thermoplastic cap degradation and leaching. Thermoplastic caps can soften, discolor, or leach residual…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel body, likely polypropylene or polyester straw lid
- The brand calls it PFAS-free, which we have not verified
- Polypropylene lid and straw thermal stability. Polypropylene lids can warp, discolor, or release volatile…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, activated carbon filter
- The brand calls it PFAS-free, which we have not verified
- Activated carbon filter maintenance and microbial growth. If the filter is not replaced on schedule or stored…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle with reflective coating (paint-based)
- The brand calls it PFAS-free, which we have not verified
- Paint coating degradation and flaking. The reflective paint coating may chip or peel with heavy use, UV…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel body, silicone/plastic components
- The brand calls it PFAS-free, which we have not verified
- Silicone thermal stability (cap/gasket components). Silicone gaskets and the Loop Cap can degrade or off-gas…
2 hazards checked on this product, all on its full breakdown.
- stainless steel with bamboo fiber lid
- We found no PFAS statement from the brand
- Bamboo fiber lid degradation and microbial growth. Natural fiber composites can absorb moisture in seams and…
2 hazards checked on this product, all on its full breakdown.
- stainless steel container with glass or ceramic lid
- We found no PFAS statement from the brand
- Ceramic or glass lid degradation. Ceramic lids may develop micro-cracks or glaze wear over time from repeated…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel container, food-grade silicone lid
- We found no PFAS statement from the brand
- Silicone elastomer degradation. Food-grade silicone is stable at room temperature and mild heating but can…
What to buy instead Good or better, in the categories Klean Kanteen sells
- Stainless steel body, no coating disclosed
- We found no PFAS statement from the brand
- Bacterial or mold growth in storage
3 hazards checked on this product, all on its full breakdown.
- Tritan copolyester plastic
- We found no PFAS statement from the brand
- Microplastic shedding from surface degradation
2 hazards checked on this product, all on its full breakdown.
- Double-wall stainless steel
- We found no PFAS statement from the brand
- Lid and seal polymer hazards
2 hazards checked on this product, all on its full breakdown.
- Stainless steel body, vacuum insulation
- We found no PFAS statement from the brand
- Seal and gasket material degradation
2 hazards checked on this product, all on its full breakdown.
- Stainless steel tumbler with rubber soft grip
- We found no PFAS statement from the brand
- Rubber grip degradation
2 hazards checked on this product, all on its full breakdown.
- Stainless steel interior, vacuum insulation, unspecified lid/exterior coating
- We found no PFAS statement from the brand
- Lid coating or sealant composition (unspecified)
3 hazards checked on this product, all on its full breakdown.
- borosilicate glass
- We found no PFAS statement from the brand
- Leaching from glass matrix or lid seals
2 hazards checked on this product, all on its full breakdown.
- Stainless steel container, no surface treatment
- Lid/gasket polymer leaching
3 hazards checked on this product, all on its full breakdown.
- 304 stainless steel container with silicone or rubber gasket lid seal
- Nickel leaching from 304 stainless steel
3 hazards checked on this product, all on its full breakdown.
Klean Kanteen and PFAS, common questions
- Does Klean Kanteen have PFAS?
- Klean Kanteen averages 92 out of 100 on PFAS Authority's PFAS and toxin screen across the 20 Klean Kanteen products graded as of October 2026, and all 20 reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Klean Kanteen non-toxic?
- Klean Kanteen 27oz Wide Water Bottle with Loop Cap is the highest-graded Klean Kanteen product we have scored, at 100/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Klean Kanteen products are lower concern for PFAS?
- The highest-graded Klean Kanteen products we have scored are Klean Kanteen 27oz Wide Water Bottle with Loop Cap, Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid, Klean Kanteen Rise Classic Insulated Water Bottle. That is our model-based estimate from materials and public disclosure, not a lab test.
Every grade uses the same public rubric. How grades work →