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this post was submitted on 30 Nov 2023
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TIL that America uses lead water pipes… WTF
It's actually pretty common around the world. Most places stopped putting in new ones but haven't gone back and phased out the old ones.
The UK and Germany for example didn't discontinue the practice until the 70s.
Usually there's a coating in the pipes that prevents contamination, allowing utilities to replace the pipes with more modern replacements as they do routine maintenance. There's a big focus on doing that maintenance ahead of schedule in the US after a series of very public incidents where that coating was damaged and lead got in the water causing serious issues.
Coating on lead pipes? I highly doubt that. The whole point of using lead is that it's malleable, corrosion resistant and cheap.
The coating is usually a scale build up and not an intentional coating.
https://www.sciencedaily.com/releases/2019/04/190403080506.htm
It's not like it's plastic lined, but there's a coating that prevents lead from leeching into the water supply that's built up by additives in the water.
If you want more info, just look up lead pipe scale.
Not that plastic coating would be much better with what we're learning about that now.
America used lead water pipes
Lead pipes can last 100+ years
America is ~250 years old.
Lead pipes installed in early 1900s would still be functional today.
Now look at the UK. They still use lead sheet for roofing, as well as piping.
People have been using lead for building materials and pipes for ages. The Romans had a ton of lead stuff.
Unless your city was torn to shreds by war or was built after the 50s, you probably have some lead lines too, haha.
Suddenly everything starts to make sense.