Another thing I remembered my sister saying, a lot of the workers in drinking & waste water (which are the same industry and in most cases run as the same system) are nearing retirement & many retired bc of COVID, when you work with human waste you're exposed to every disease the population gets.

So there's a shortage of workers and a lot of institutional knowledge is retiring out. Plus big tech needs workers with the same skills so many get poached. So that's another thing to consider with aging infrastructure, the people who maintain it are aging too