NSF/ANSI Certified Water Filters

Looking for verified performance, not just marketing claims? Every filter and system in this collection is officially certified to NSF/ANSI standards by trusted third-party organizations like NSF International, the Water Quality Association (WQA), or IAPMO R&T.

⭐ Featured: British Berkefeld Ultra Sterasyl Filters

These long-lasting ceramic filter elements are certified for performance and material safety—making them an ideal replacement filter choice for your gravity system.

  • NSF/ANSI-certified for microplastics, particulates, cysts & turbidity
  • Independantly tested to remove chlorine, lead & more
  • Compatible with most gravity systems
View Product

Why NSF/ANSI Certification Matters

  • Verified contaminant reduction – Not just tested, but independently certified to remove lead, PFAS, fluoride, chlorine, and more
  • Material safety – Ensures components won’t leach harmful substances into your water
  • Structural integrity – Certified systems are tested for pressure, durability, and reliability

Tested. Trusted. Certified.

Whether you’re filtering well water or city water, NSF/ANSI certification is the gold standard for health-based performance claims. These filters meet strict standards such as:

  • NSF/ANSI 42 – Aesthetic contaminants (chlorine, taste, odor)
  • NSF/ANSI 53 – Health contaminants (PFAs, lead, fluoride, VOCs)
  • NSF/ANSI 58 – Reverse osmosis system performance
  • NSF/ANSI 401 – Emerging compounds (pharmaceuticals, microplastics, pesticides)

Every product listed here includes its official certification file or public listing for transparency. If it’s not certified, it’s not included.

Learn more about NSF/ANSI certifications in our educational guide.

2 products