Do Grayl water filters have PFAS?
Grayl water filters average 96 out of 100 on PFAS Authority's PFAS and toxin screen across the 13 Grayl water filters graded as of October 2026, above the 95 out of 100 median for the 63 other water filters brands graded alongside it.
Grayl water filters average Excellent on our four-band scale. 13 of the 13 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.
Grayl water filters worth buying Good or better, best-graded first
Grayl
Geopress Purifier Bottle
- Stainless steel body, activated carbon/charcoal filter cartridge
- We found no PFAS statement from the brand
- Bacterial growth in filter or housing if unmaintained, Any water filter cartridge can harbor bacteria if left…
2 hazards checked on this product. See all of them.
Grayl
GeoPress Water Purifier Bottle
- Silicone, stainless steel, and activated coconut carbon filtration cartridge
- We found no PFAS statement from the brand
- Bacterial growth in exhausted filter cartridge, Coconut carbon does not actively kill pathogens; once…
2 hazards checked on this product. See all of them.
Grayl
UltraPress Water Filters
- Stainless steel, plastic housing, activated carbon/coconut shell filters
- We found no PFAS statement from the brand
- Bacterial growth in filter media, Activated carbon is a porous medium that can develop biofilm if filters are…
2 hazards checked on this product. See all of them.
Grayl
GeoPress + Pathfinder Complete Water Filtration Kit
- Borosilicate glass cartridge, proprietary filter media blend
- We found no PFAS statement from the brand
- Bacterial growth if filter cartridge unmaintained, Water filters become colonized by biofilm and bacteria if…
3 hazards checked on this product. See all of them.
Grayl
GEOPRESS PURIFIER BOTTLE
- Activated coconut carbon filter, plastic housing
- We found no PFAS statement from the brand
- Bacterial growth and biofilm in filter cartridge, If replacement schedule is not followed or bottle sits…
3 hazards checked on this product. See all of them.
Grayl
GeoPress Ti Purifier
- Titanium-reinforced thermoplastic, activated coconut-carbon filter
- We found no PFAS statement from the brand
- Bacterial growth in filter media, Activated carbon, while not a material linked to PFAS concerns, can harbor…
3 hazards checked on this product. See all of them.
Grayl
GeoPress Water Purifier
- Polypropylene (PP) filter cartridge housing; activated coconut carbon/resin filter media
- We found no PFAS statement from the brand
- Bacterial regrowth / biofilm in housing, Polypropylene provides a porous internal surface where bacteria can…
4 hazards checked on this product. See all of them.
Grayl
UltraPress Purifier Bottle
- BPA-free plastic bottle body, coconut-fiber replaceable filter media
- We found no PFAS statement from the brand
- Bacterial growth in filter cartridge, Coconut-fiber filters can support bacterial biofilm growth if…
4 hazards checked on this product. See all of them.
Grayl
UltraPress Purifier Nature Edition
- Plastic housing with activated carbon cartridge
- We found no PFAS statement from the brand
- Plastic leaching (housing material unspecified), Grayl does not publicly identify the plastic type, so BPA or…
4 hazards checked on this product. See all of them.
Grayl
UltraPress Ti Purifier
- Titanium-reinforced polymer body, activated carbon filter media
- We found no PFAS statement from the brand
- Activated carbon filter maintenance and microbial growth, Wet, unmaintained carbon media can support…
2 hazards checked on this product. See all of them.
Grayl
UltraPress Titanium Purifier Bottle
- Titanium container, activated carbon and ion-exchange resin filters
- We found no PFAS statement from the brand
- Bacterial growth in filter media if unmaintained, Activated carbon and ion-exchange resin cartridges become…
3 hazards checked on this product. See all of them.
Grayl
Water Purification System
- activated coconut carbon filter, plastic housing
- We found no PFAS statement from the brand
- Bacterial or microbial growth (unmaintained cartridge), If cartridge replacement schedule is ignored or the…
3 hazards checked on this product. See all of them.
Grayl
Ultralight Purifier Water Bottle
- BPA-free plastic bottle, activated carbon and ion-exchange filter cartridge
- We found no PFAS statement from the brand
- Bacterial growth (filter biofilm), Any water filter cartridge can develop biofilm if cartridge sits wet and…
3 hazards checked on this product. See all of them.
Better water filters from other brands
Graded higher than the Grayl average of 96.
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. Grayl averages 96.
See every Grayl product we grade on the Grayl brand page, or the full water filters ranking.