What’s actually in your water?
Enter your ZIP. We pull your utility’s real EPA testing, grade each PFAS against the health-based limit (with the date + the basis), then show the filter that handles what your water carries — and what still slips through.
- Your utility’s real measured PFAS (EPA UCMR5), sourced & dated
- Non-detects shown honestly — never a guessed number
- No sponsored rankings, no upsells
A good filter catches a lot — but not everything.
In general, here is what a multi-stage cartridge removes at each stage — and what needs reverse osmosis or a softener instead. Your exact water report (by ZIP) is coming next.
Don’t take the box’s word. Search the record.
Every certification, cross-checked against the NSF & WQA listings. We show what’s actually listed — not what the label implies.
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 |
|---|---|---|---|---|---|---|
| LG OEMLG LT120F (Fresh Air / air-purifying filter)LT120F, ADQ73214404, ADQ73214403, ADQ73214402, ADQ73334008 | Air | -- | -- | -- | -- | per the listing (verify at info.nsf.org)What the record showsTypically a sediment / RO-stage / specialty element; we found no published NSF reduction claim on record for it. 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.
We pulled the NSF listings for 9 aftermarket brands. Not one carried NSF-53 line-wide — yet most imply it.
Methodology, the brand-by-brand table, and the limitations — all stated plainly.
Every brand’s verified filter, in one card.
OEM part, the listed aftermarket match, and what it actually removes. Free, no spam.