Kohler Review, Is Kohler Non-Toxic?
Kohler averages 95 out of 100 on PFAS Authority's PFAS and toxin screen across the 3 Kohler products graded as of October 2026, and all 3 reach its 70 point pass mark.
Kohler grades Excellent on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. 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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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.
Which Kohler products are PFAS-free? Good or better, best-graded first
- Activated carbon & KDF-55 cartridge filter; brass/plastic housing
- We found no PFAS statement from the brand
- Copper leaching from brass housing. Brass fittings can leach copper into standing water, but shower filters…
4 hazards checked on this product, all on its full breakdown.
- activated carbon filter cartridge (typical composition for KOHLER Cinq)
- We found no PFAS statement from the brand
- Bacterial growth in spent or unmaintained filter. Activated carbon media, once saturated, can become a…
2 hazards checked on this product, all on its full breakdown.
- Activated carbon filter media, plastic housing
- We found no PFAS statement from the brand
- Bacterial biofilm growth in filter media. Activated carbon can support microbial growth if the filter is not…
2 hazards checked on this product, all on its full breakdown.
Kohler and PFAS, common questions
- Does Kohler have PFAS?
- Kohler averages 95 out of 100 on PFAS Authority's PFAS and toxin screen across the 3 Kohler products graded as of October 2026, and all 3 reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Kohler non-toxic?
- Kohler Aquifer Shower Filter 22321-CP is the highest-graded Kohler product we have scored, at 95/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Kohler products are lower concern for PFAS?
- The highest-graded Kohler products we have scored are Kohler Aquifer Shower Filter 22321-CP, KOHLER Cinq Showerhead Replacement Filter, KOHLER Aquifer Shower Water Filtration System. 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 →