Yep. And it wouldn't have cost much. Emphasis mine:

> Marc Edwards, a professor at Virginia Tech who has been testing Flint water, says treatment could have corrected much of the problem early on — for as little as $100 a day — but officials in the city of 100,000 people didn't take action.

> "There is no question that if the city had followed the minimum requirements under federal law that none of this would have happened," said Edwards, who obtained the Muchmore email through a Michigan Freedom of Information Act request.

http://www.nbcnews.com/health/health-news/internal-email-mic...