Do Nalgene water filters have PFAS?
Nalgene water filters average 95 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 Nalgene water filters graded as of October 2026, level with the 95 out of 100 median for the 64 other water filters brands graded alongside it.
Nalgene water filters average Excellent on our four-band scale. 4 of the 4 we graded are worth buying. That is above 36% of the water filters brands we grade.
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.
You may also be interested in
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.
Nalgene water filters worth buying Good or better, best-graded first
- HDPE plastic
- We found no PFAS statement from the brand
- Microplastics. Heating HDPE above 60C can theoretically accelerate polymer degradation and fiber shedding.…
3 hazards checked on this product, all on its full breakdown.
- BPA-free copolyester plastic (Tritan or similar)
- We found no PFAS statement from the brand
- Microplastic release under heat. No documented incidents reported for Nalgene bottles under normal use. Risk…
2 hazards checked on this product, all on its full breakdown.
- Activated carbon filter media
- We found no PFAS statement from the brand
- Bacterial growth in filter media. Spent activated carbon provides a moist, nutrient-poor substrate where…
4 hazards checked on this product, all on its full breakdown.
- Tritan copolyester (BPA-free plastic)
- We found no PFAS statement from the brand
- Coating or seam degradation over time. Repeated thermal cycling (hot dishwasher cycles) and UV exposure can…
2 hazards checked on this product, all on its full breakdown.
Better water filters from other brands
Graded higher than the Nalgene average of 95.
- glass bottles, sodium dichloroisocyanurate treatment chemical
- We found no PFAS statement from the brand
- Chemical overdose or misuse
5 hazards checked on this product, all on its full breakdown.
- 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, all on its full breakdown.
- Borosilicate glass pitcher, replaceable activated-carbon filter cartridge
- Bacterial growth in filter cartridge if unmaintained
5 hazards checked on this product, all on its full breakdown.
The same question, asked of the other water filters brands
Best average grade first. Nalgene averages 95.
See every Nalgene product we grade on the Nalgene brand page, or the full water filters ranking.