I do agree with part of your sentiment. Those two examples are the worst case scenarios where misfortunes happened to align, and there are periods in history, as well as other countries today, where this sort of problem was/is rampant.
This is also not (exactly) a recent problem - the groundwork, no pun intended, was often laid long ago.
[1] https://www.theguardian.com/us-news/2022/sep/21/lead-contami...
[2] https://www.newsobserver.com/news/local/education/article268...
With that said, we're now actually putting the money towards replacing them.
https://www.epa.gov/ground-water-and-drinking-water/funding-...
And that list doesn't even include the tragedy of the commons situation that is California.
But going back to Jackson, Mississippi, it seems that elected officials refuse to properly fulfill their role in governing. Ie. serving the public. What does that say about an empire? It's not some accident that they are helpless in, more that it is in decline.
When you consider the political incentives, it's an under-appreciated miracle that politicians in the US serve the public at all and that things shamble along as well as they do.
https://www.nrdc.org/resources/lead-pipes-are-widespread-and...
“Lead service lines—the pipes that carry water from the water main under the street to residences—have long been recognized as the primary contributor of lead in drinking water (we’ll call them lead pipes for simplicity’s sake). After conducting a survey of these lead pipes in the United States, NRDC estimates that there is a range of 9.7 million to 12.8 million pipes that are, or may be, lead, spread across all 50 states, including those that claim to have none.”
This affects some 22 million people.