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FilterScored

Contaminant · Water

Lead

EPA action level 15 ppb (no known safe level for children). 11 of the water filters we score hold an accredited NSF, WQA, or IAPMO certification to reduce Lead, and 11 more market it with no accredited certification we could verify. A claim is not a certification.

What it is

If you are worried about lead, here is the thing to know first: it usually is not coming from your water source, it is picked up on the way to your tap. Lead leaches in from corrosion of older lead service lines, plumbing, and brass fixtures, so it is the pipes in and around your home that matter most. That is why two houses on the same supply can test completely differently, and why your neighbor's result does not tell you yours.

Why it matters

Here is what the official sources actually say. The EPA sets an action level of 15 parts per billion (ppb, a way of expressing very small concentrations) and states there is no known safe level of lead exposure for children. The CDC links elevated childhood blood-lead levels to developmental effects. Those are regulatory and public-health statements about lead itself, not claims about any product - we are simply telling you what the agencies have published.

What removes it

What to look for: a filter certified to NSF/ANSI 53 for lead. Reverse osmosis (NSF/ANSI 58) also reduces lead. The detail that trips people up is that certification for lead specifically is what counts - a general 'NSF certified' logo may only cover taste and odor, so check that lead is named on the listing, not just an NSF badge on the box.

Reference: EPA Lead and Copper Rule; CDC childhood lead guidance.

Scored filters certified for Lead

Marketed for Lead, but not certified

These scored filters market Lead reduction but we found no accredited NSF, WQA, or IAPMO certification for it - "tested to" is not "certified to." Absence of certification is not proof a product fails to reduce it, only that we found no independent verification.

FAQ

Does boiling water remove lead?
No. The CDC and the EPA are both blunt about this: boiling does not remove lead, and because some of the water boils off, it can leave the lead more concentrated than before. Use a filter certified to NSF/ANSI 53 for lead.

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