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    Why would there be lead in stainless steel to begin with? Commented Jan 10, 2020 at 4:06
  • @ThreePhaseEel My gut feeling is "stainless steel should never have lead problems". But if I were installing somewhere that it is a "big deal", having certification of that (as with brass) would be very helpful. Commented Jan 10, 2020 at 4:33
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    I guess you realize that in the US, "lead free" is defined in the Federal Safe Drinking Water Act as "a maximum weighted lead content of 0.25% on the wetted surface." It doesn't mean zero lead. Commented Jan 10, 2020 at 5:10
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    Does the product data sheet indicate it is fit for potable water? Commented Jan 10, 2020 at 6:39
  • Stainless plumbing hardware usually tells you the stainless alloy used, generally 304 or 316, and then you can use that to look up exactly what's in it. For example, here's the info on 304 Stainless: en.wikipedia.org/wiki/SAE_304_stainless_steel Commented Feb 5, 2021 at 17:45