Do KOR water filters have PFAS?
KOR water filters average 97 out of 100 on PFAS Authority's PFAS and toxin screen across the 6 KOR water filters graded as of October 2026, above the 95 out of 100 median for the 63 other water filters brands graded alongside it.
KOR water filters average Excellent on our four-band scale. 6 of the 6 we graded are worth buying.
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.
KOR water filters worth buying Good or better, best-graded first
KOR
650mL Nava Filter Water Bottle
- Stainless steel body; carbon/activated carbon filter media
- We found no PFAS statement from the brand
- Bacterial growth in filter media, Activated carbon filters are prone to bacterial colonization if not…
3 hazards checked on this product. See all of them.
KOR
Nava Filter Water Bottle - 24 oz (700 mL) Ocean Moss
- Stainless steel body, activated carbon filter cartridge
- We found no PFAS statement from the brand
- Bacterial growth in filter cartridge, Activated carbon filters can harbor bacteria if cartridges are not…
3 hazards checked on this product. See all of them.
KOR
Water Fall Glass Carafe 34oz by KOR Water
- borosilicate glass carafe
- We found no PFAS statement from the brand
- Bacterial growth and biofilm in standing water, Although glass itself does not support microbial adhesion…
2 hazards checked on this product. See all of them.
KOR
Promotional KOR Nava Water Bottle w/Filter - 24ozs
- Plastic bottle (likely Tritan or polycarbonate) with replaceable carbon filter
- We found no PFAS statement from the brand
- Bacterial contamination in carbon filter, Activated carbon filters are porous and can harbor bacteria and…
2 hazards checked on this product. See all of them.
KOR
Promotional KOR Waterfall Filtration System - 33ozs
- Plastic bottle with carbon/activated carbon filtration media
- We found no PFAS statement from the brand
- BPA & bisphenols, The bottle material is plastic, but KOR has not publicly disclosed whether it is BPA-free…
3 hazards checked on this product. See all of them.
KOR
Blue Custom Water Bottles Kor Nava Bottle w/Filter - 24oz
- BPA-free plastic bottle with activated carbon filter
- We found no PFAS statement from the brand
- Bacterial growth in filter cartridge, Integrated, non-replaceable (or semi-replaceable) filters can harbor…
3 hazards checked on this product. See all of them.
Better water filters from other brands
Graded higher than the KOR average of 97.
Aquamira
Water Storage Treatment 2 oz Glass Bottles 60 gallons Purification
- glass bottles, sodium dichloroisocyanurate treatment chemical
- We found no PFAS statement from the brand
- Chemical overdose or misuse
5 hazards checked on this product. See all of them.
Big Berkey
Empty Housing with NO Filters Included
- Stainless steel housing and spigot
- We found no PFAS statement from the brand
- Bacterial growth and biofilm if filters not replaced
5 hazards checked on this product. See all of them.
LifeStraw
Home Glass Water Filter Pitcher
- Borosilicate glass pitcher, replaceable activated-carbon filter cartridge
- Bacterial growth in filter cartridge if unmaintained
5 hazards checked on this product. See all of them.
The same question, asked of the other water filters brands
Best average grade first. KOR averages 97.
See every KOR product we grade on the KOR brand page, or the full water filters ranking.