this post was submitted on 10 Nov 2025
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Today I Learned (TIL)

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Hot water dissolves lead more quickly than cold water and is therefore more likely to contain greater amounts of lead. Never use water from the hot water tap for drinking, cooking, or making baby formula.

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[–] doc@fedia.io 5 points 1 week ago

Well damn. Lead restrictions weren't Federal law until 1986. TIL.

https://www.epa.gov/sdwa/use-lead-free-pipes-fittings-fixtures-solder-and-flux-drinking-water

Although some areas added local restrictions starting in the 1920's, industry lobbies kept the things on the market for decades. Ugh.

https://pmc.ncbi.nlm.nih.gov/articles/PMC2509614/