3 ms·

IIRC Flint, MI used to have some coating on their lead piping. Then they changed the water supply somehow (removed some additive? I forget), the coating dissol

• toomuchtodo 2y ago
  OP is likely referring to epoxy and resin lining. It is a potential solution for some use cases (sewer lines that are very expensive to dig up, especially runs under foundations and concrete slabs), but failure rates are high when used on potable water supply lines (the epoxy eventually flakes, damaging valves and clogging downstream runs). Trenching and repiping is expensive but necessary in this scenario, from the street main through the branch service entrance until you get to the main shutoff in the home, as this will ensure longevity of the new service commensurate with the investment in the replacement.
• 486sx33 2y ago
  They actually changed the source of their water, for a few reasons, but the lead pipes behaved OK when used with water from the Detroit system, once they switched to drawing from the flint river (while a pipeline to Lake Huron was being constructed) the more corrosive water from the flint river sort of “unleashed the leaching” of lead from the pipes. So, it’s about a bit more than just lead pipes. Here’s a good article explaining https://www.nrdc.org/stories/flint-water-crisis-everything-you-need-know#summary https://www.nrdc.org/stories/flint-water-crisis-everything-y...