I’ll note that this is very different from what the Trump administration did, where they actively worked to create a loophole for this pollution. If you’re an American who prefers to see active regulation chemicals which raise cancer risk and harm reproduction, it’s worth checking your voter registration to make sure it hasn’t been purged, volunteering if possible, and donating if you can afford it
I won’t be holding my breath for it to actually happen. Most municipality water systems in this country barely function.
It won’t happen overnight; it requires installing or changing equipment. But it will happen over the next few years.