Do On Running running & athletic shoes have PFAS?
On Running running & athletic shoes average 43 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 On Running running & athletic shoes graded as of October 2026, above the 31 out of 100 median for the 20 other running & athletic shoes brands graded alongside it.
On Running running & athletic shoes average Poor on our four-band scale. None of them clear our buy threshold.
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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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- 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
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- 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.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
What On Running says and does about PFAS
On says its products are made without intentionally added PFAS, in compliance with New York and California law, and that all its suppliers follow the AFIRM restricted substances list. On is listed as an AFIRM member. That is On’s own claim, and we found no independent PFAS test of On shoes.
- Brand statementOn’s sustainability FAQ says its products are made without intentionally added PFAS, in compliance with New York and California state laws. On (archived page) ↗
- Brand statementThe same FAQ says all its suppliers align with the restricted substance list from the Apparel and Footwear International RSL Management Group (AFIRM). On (archived page) ↗
- Regulatory filingAFIRM lists On among its members. AFIRM Group ↗
Sources checked September 14, 2026. A brand statement is the company’s own claim, which we report but have not verified. Our grades are model-based estimates, not lab tests.
Which On Running running & athletic shoes contain PFAS? Poor and Bad, we’d swap these
- Knit textile upper, foam midsole, rubber outsole
- Formaldehyde / VOCs. Knit uppers may contain residual formaldehyde-based dyes or wrinkle-resist finishes.…
4 hazards checked on this product, all on its full breakdown.
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- Textile upper, foam midsole, rubber outsole
- Foam midsole degradation and microparticle shedding, EVA and polyurethane foams can break down over time…
- Textile with waterproof coating
- Waterproof coating degradation and leaching. On Running does not disclose the water-repellent coating…
5 hazards checked on this product, all on its full breakdown.
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- textile with waterproof water-repellent coating
- Antimony in polyester components. If the shoe contains polyester fiber (common in modern knit uppers), it may…
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonBetter running & athletic shoes from other brands
Graded higher than the On Running average of 43.
- Canvas upper, rubber sole
- We found no PFAS statement from the brand
- Azo dyes in canvas
2 hazards checked on this product, all on its full breakdown.
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- Canvas, rubber sole
- We found no PFAS statement from the brand
- Azo dyes and synthetic dyes
4 hazards checked on this product, all on its full breakdown.
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- Mesh upper, Fresh Foam midsole, rubber outsole
- We found no PFAS statement from the brand
- Azo dyes and color-based toxins
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonThe same question, asked of the other running & athletic shoes brands
Best average grade first. On Running averages 43.
See every On Running product we grade on the On Running brand page, or the full running & athletic shoes ranking.