I'm not a fan of endless improvements, especially those that are minor, time-consuming, and mandated without regard to the cost imposed. And, believe me since I work in healthcare, I live with a lot of time-consuming, mandated requirements.
However, safe drinking water is one of the banner achievements of our society. Its loss, in a stupid and wanton way, is a reminder of how necessary regulations are. Somehow, all the clean water regulations in the country and in Michigan didn't prevent this preventable mistake.
I know hardly anything about water regulations, so I don't know if regulations were ignored, or maybe loopholes used. But having worked in bureaucratic organizations, I can imagine that some people knew this water change was a very bad idea, yet they were overruled or not listened to. And maybe someone (a cog in the machine, like me) rubberstamped the changes and they went ahead.
I pray that I'm strong enough to stand up if I'm ever in this situation, but I'm not confident I would be. And I don't know a fail-safe answer either. After all, weren't there already fail-safe regulations already in place, yet this still occurred?
If this was your house, your bath, your water...
Extra. Details (but readable) about the chemistry of water treatment.
Update 2/13/16. Emails warning not to do this. I wish there were more details in the emails about why.
Update 2/26/16. Similar news story, but still not clear as to warnings.