Is LG NSF certified?

Last reviewed July 2026.

Yes. LG filters are listed by NSF against NSF/ANSI standards including 53 — the health-effects standard that covers lead — so the lead claim is one you can actually verify in a public listing.

What the listing actually says

LT1000P: NSF-listed to NSF/ANSI 42, 53 and 401. LG's LT800P is listed to 42 and 53 only — the 401 emerging-contaminant claim does not carry across the LT line.

What those standard numbers mean

• NSF/ANSI 42 — aesthetic effects (chlorine, taste and odour). Not a health claim.
• NSF/ANSI 53 — health effects. This is the standard that covers lead.
• NSF/ANSI 401 — emerging contaminants: PFOA/PFOS, pharmaceuticals, microplastics.

Verify it yourself: every LG row above links the certifier's own listing. If a number here disagrees with the listing, the listing wins — tell us and we'll fix it.

What the certified claim costs to run

Certification is per model, and so is the running cost. The cheapest LG model carrying the claim is the LT1000P Refrigerator Water Filter (LT1000P) at about $54.99 per filter for a certified 200 gallons — $0.275 per certified gallon.

That capacity is what the certifier tested to, not a marketing estimate. For one person drinking about half a gallon a day it is roughly 13 months per filter; for a family of four, closer to 3 months. Run past the rated capacity and the claim no longer applies — the media is exhausted even though the filter still passes water.

See how LG ranks on cost per certified gallon against every filter we track →

Related: Does LG remove lead? · Does LG remove PFAS?

We do not test filters — we index what accredited certifiers publish, with attribution, and make no health or treatment claims. A certification covers a specific model against a specific standard; it is not a general seal of quality. We are not affiliated with NSF International.