What are they replacing them with?

Probably not, but it sure beats $0.

They don't have to be dug up. The first step is chemistry - Flint was fine with lead pipes until they switch water sources to something with a different composition (ph I think - but there are other factors and we should get expert chemists to speak here not laypeople like us). Anywhere that lead pipes exist we need monitoring to ensure that the water doesn't dissolve lead, once we have that in place the pipes don't leach much lead and we can do a slower replacement when the pipes need to be replaced anyway.

We also have technology to put a plastic liner in existing pipes for much less than digging the pipes up. It doesn't work for all situations, but when it does is a lot cheaper and should be investigated for any pipe that is expected to last a long time.

https://www.brookings.edu/articles/what-would-it-cost-to-replace-all-the-nations-lead-water-pipes/

From the article:

How much would it cost to get lead out of the U.S.’s drinking water? A back-of-the-envelope calculation based on EPA’s estimate of average replacement cost per line ($4,700) and assumption of 6 to 10 million lead service lines across the country suggests the cost could range from $28 billion to $47 billion, putting Biden’s originally-proposed $45 billion near the top of that range—but the $15 billion legislated well below it.

Seems like just a drop in the bucket! HAHAHA, ha... ehh...

That kind of money is reserved for a month of bombing, sorry

Now now now. We can do both thank you very much.

Can you imagine how much a government alchemist contract costs though?

Any leftover protons will just combine with oxygen in the air and become water. Really pure water!

Really hot water too, that reaction is just a tad exothermic.

bUt gENociDE

With the exception of some moronic fiscal managers in Flint, it has been solved since the 90s. The Lead and Copper rule dates to the early 90s and required regular testing and action. Most utilities started adjusting PH and adding a lead corrosion inhibitor called orthophosphate. That dropped lead levels to zero most places.

Flint didn’t do that, so here we are. Also worth noting it was banned for new connections in 1986, though many cities banned it decades earlier. My own city banned lead in 1954, but because we’re an old city, we have 140,000 still out there. That’s over $1 billion (probably twice that by the time we’re done) for just my one city alone. Getting rid of lead will take even more money than this.

They have been. For years now. Do cities where it hasnt turned into a disaster before it does.

you're so depressing

PVC is a horrid material to make small pressure pipes with. Too brittle, so it cracks easily under any bending stress. Most utilities still use type k copper, but some might use HDPE or PEX.

Now, lots of 4 inch and larger pipe is replaced with PVC, but that is generally replacing cast iron or asbestos cement. Lead pipes are in the smaller diameters going to individual homes and businesses.