Non-Toxic Whole-House Filters, ranked by PFAS grade
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
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.
- polyurethane foam
- We found no PFAS statement from the brand
- Volatile Organic Compound (VOC) Off-Gassing
4 hazards checked on this product, all on its full breakdown.
All 18 whole-house filters PFAS Authority has graded reach its 70 point pass mark for PFAS and other toxins, as of October 2026. The highest graded is Aqua Pure 3M Aqua-Pure AP802B Whole House Filter Housing at 95 out of 100.
The full ranking is below, best-graded first, with every score linking to the evidence behind it.
Are whole-house filters safe?
18 of the 18 whole-house filters we graded come back low-concern on our screen and 0 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.
Best graded whole-house filters here
- 1Aqua Pure 3M Aqua-Pure AP802B Whole House Filter Housing 95 out of 100
- 2Aqua Pure 3M Aqua-Pure Whole House Water Filtration System AP11T 95 out of 100
- 3Culligan HD-950A Heavy Duty Whole House Water Filter 95 out of 100
Start here
The best non-toxic whole-house filters, ranked by grade
Buyer’s guide
What to look for in whole-house filters, and which brands grade best and worst
Whole-House Filters, ranked.
The quickest read, what to skip and the top-graded picks worth buying instead.
Filtrete
High Performance Whole House Sanitary Quick-Change Filter System, Large Capacity
Lower concern water filter; PFAS use in carbon filters unlikely but unconfirmed.
Filtrete
3WH-HD-S01 Large Capacity Whole House Pre-Filtration System
Lower concern; standard pre-filter media unlikely to contain PFAS.
Aqua Pure
3M Aqua-Pure AP802B Whole House Filter Housing
Lower-concern filter housing; no PFAS-prone coatings identified, but brand silence limits certainty.
Which whole-house filters are PFAS-free? Good or Excellent, best-graded first
- 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.
- Activated carbon filter media; plastic housing and cartridge frame
- We found no PFAS statement from the brand
- Bacterial growth and biofilm in filter cartridge
4 hazards checked on this product, all on its full breakdown.
- activated carbon filter media, polypropylene housing
- Bacterial growth in stagnant housing
4 hazards checked on this product, all on its full breakdown.
- Carbon and sediment filter media; polypropylene housing
- Bacterial growth in filter housing if maintenance is deferred
3 hazards checked on this product, all on its full breakdown.
- Activated carbon and sediment filter media; polypropylene/polyester housing components
- We found no PFAS statement from the brand
- Bacterial growth and biofilm in unmaintained filter housing
4 hazards checked on this product, all on its full breakdown.
- activated carbon, ion-exchange resin cartridge
- We found no PFAS statement from the brand
- Bacterial growth in filter cartridge (maintenance-dependent)
3 hazards checked on this product, all on its full breakdown.
- Activated carbon/pleated filter media
- We found no PFAS statement from the brand
- Bacterial growth in housing or bypass if unmaintained
3 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 growth in filter media if maintenance is neglected
4 hazards checked on this product, all on its full breakdown.
- Activated carbon filter media with polypropylene housing
- We found no PFAS statement from the brand
- Bacterial growth in filter housing or media
3 hazards checked on this product, all on its full breakdown.
- Activated carbon and sediment filter media
- We found no PFAS statement from the brand
- Bacterial biofilm growth in filter housing
4 hazards checked on this product, all on its full breakdown.
- Activated carbon and sediment filter media, plastic housing
- We found no PFAS statement from the brand
- Plastic housing leachables
5 hazards checked on this product, all on its full breakdown.
- activated carbon, polypropylene housing
- We found no PFAS statement from the brand
- Bacterial growth if maintenance is neglected
4 hazards checked on this product, all on its full breakdown.
- Activated carbon and ion-exchange resin filter media; plastic/polymer housing
- Plastic housing leachables
5 hazards checked on this product, all on its full breakdown.
- Activated carbon filter media, polypropylene housing
- We found no PFAS statement from the brand
- Activated carbon dust and microparticle release
3 hazards checked on this product, all on its full breakdown.
- Carbon and sediment filter cartridges; housing components
- We found no PFAS statement from the brand
- Bacterial growth in unmaintained cartridges
2 hazards checked on this product, all on its full breakdown.
- Activated carbon and sediment filter media
- We found no PFAS statement from the brand
- Bacterial or mold growth in unmaintained filter media
3 hazards checked on this product, all on its full breakdown.
- Activated carbon and sediment filter media
- We found no PFAS statement from the brand
- Bacterial colonization of filter media
Filtrete
High Performance Whole House Sanitary Quick-Change Filter System, Large Capacity
- activated carbon filter media, plastic housing
- We found no PFAS statement from the brand
- Bacterial growth and biofilm in unmaintained filter media
4 hazards checked on this product, all on its full breakdown.
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