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Filter Certification Registry
Search any brand, filter part number, or contaminant and see what the official NSF / WQA certification record actually shows -- versus what the box implies. We read 68 filter lines and the NSF/IAPMO/WQA listings so you can verify before you buy.
How to read this: don't take the box's word -- this is what the certification record shows.
- Listed On the official NSF (or WQA Gold Seal) certification record.
- Select SKUs Listed for lead, but only on specific premium SKUs -- not the whole line.
- Via IAPMO/WQA Certified by IAPMO R&T or WQA (legitimate) rather than listed by NSF.
- Implied only The box implies the claim, but we found no listing on the record -- verify the model.
- Not on record No published certification claim found (often a sediment / RO-stage element). Not the same as "fails".
No filter in this registry holds a verified NSF/ANSI P473 (PFAS) listing as of 2026-06-24. PFAS-reduction wording you see on a box is not the same as a certified P473 listing -- search "PFAS" below to see which products only claim it, and verify any claim at info.nsf.org.
| Filter | Type | NSF 42taste/odor | NSF 53lead | NSF 401emerging | PFASP473 | Certifier / record |
|---|---|---|---|---|---|---|
| AquaCrest aftermarketAquaCrest (aftermarket 'compatible' refrigerator filters)AquaCrest | Refrigerator | Listed | Select SKUs | -- | Not on record | NSF International (DWTU listing) -- select SKUsWhat the record showsAquaCrest: NSF 53 (lead) on SELECT SKUs only. NSF-listed; NSF 42 broad, NSF 53/401 on the EFF-6002S-6049S series only. No P473. The box may say it replaces a lead-certified OEM filter -- that holds ONLY on the specific SKUs NSF-listed for 53. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
| ICEPURE aftermarketICEPURE (aftermarket 'compatible' refrigerator filters)ICEPURE | Refrigerator | Listed | Via IAPMO/WQA | -- | Not on record | IAPMO R&T (not NSF-listed for lead)What the record showsICEPURE: Lead claim via IAPMO/WQA only -- NOT NSF-listed. NSF+IAPMO 42/372 base; NSF 53 NOT held -- 53 only on PLUS/PRO via IAPMO. No P473. Its lead claim is certified by IAPMO/WQA (legitimate) rather than listed by NSF and only on the premium (PLUS/PRO) SKUs. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
| Mist aftermarketMist (aftermarket 'compatible' refrigerator filters)Mist | Refrigerator | Listed | Select SKUs | -- | Not on record | NSF International (DWTU listing) -- select SKUsWhat the record showsMist: NSF 53 (lead) on SELECT SKUs only. NSF-listed; NSF 42 line-wide, NSF 53 on limited models. The box may say it replaces a lead-certified OEM filter -- that holds ONLY on the specific SKUs NSF-listed for 53. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
| PurePlus aftermarketPurePlus (aftermarket 'compatible' refrigerator filters)PurePlus | Refrigerator | Via IAPMO/WQA | Via IAPMO/WQA | -- | Not on record | IAPMO R&T (not NSF-listed for lead)What the record showsPurePlus: Lead claim via IAPMO/WQA only -- NOT NSF-listed. IAPMO-certified to 42/53/401; NOT NSF-listed. Its lead claim is certified by IAPMO/WQA (legitimate) rather than listed by NSF. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
| Tier1 aftermarketTier1 (aftermarket 'compatible' refrigerator filters)Tier1 | Refrigerator | Listed | Select SKUs | -- | Not on record | NSF International (DWTU listing) -- select SKUsWhat the record showsTier1: NSF 53 (lead) on SELECT SKUs only. NSF-listed; NSF 42/53/401 on select refrigerator models. The box may say it replaces a lead-certified OEM filter -- that holds ONLY on the specific SKUs NSF-listed for 53. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
| Waterdrop aftermarketWaterdrop (aftermarket 'compatible' refrigerator filters)Waterdrop | Refrigerator | Listed | Select SKUs | -- | Not on record | NSF International (DWTU listing) -- select SKUsWhat the record showsWaterdrop: NSF 53 (lead) on SELECT SKUs only. NSF-listed; NSF 42 broad, NSF 53/401 on ~107 of ~555 listed SKUs (Waterdrop Plus). No P473. The box may say it replaces a lead-certified OEM filter -- that holds ONLY on the specific SKUs NSF-listed for 53. Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim. |
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Certification is SKU-SPECIFIC, not brand-wide: confirm your exact model against the official listing at info.nsf.org before trusting any lead/health claim.