Steve Roark has run a Tennessee water plant more than two decades, and while happy with his job he’s eaten up by a part of it. That is the injection of fluoride into water from lake and well that he readies for human consumption in North Hamilton County. By David Tulis A man charged with things physical, Mr. Roark recounts a leak from the chemical whose rhythmic drip ate a hole in a cast iron pipe: “I seen the hole the fluoride ate through it.” In a brief tour of the Soddy-Daisy plant’s small fluoride dispensary, he talks amid the … Continue reading Fluoride corrodes plant, worries Soddy-Daisy operator