"It was far less than 10 years. He reported his concern up the chain, regarding supply chain and quality and necessity, based on current commercial and publicly available fluoride product data and emerging scientific data on fluorine products. Those who he reported to then reported up to the state. He was not a public figure and did not report to the public. This is a systemic issue."

You didn't even bother to read the story apparently, he made a medical decision that he was not qualified to do, which harmed the residents he was in charge of protecting and lied, over and over again for a decade about it:

"Richmond water superintendent Kendall Chamberlin disclosed in his five-page resignation letter, submitted Monday, that fluoride levels have not been in the state-recommended range for over a decade — instead of nearly four years, as the state had recently disclosed."