Anti-fluoride advocate Keith Oakley denounced the move to add fluoride to bottled water, saying it would make it harder for him and his colleagues to access water.
He said the move would also backfire.
"If they want to put fluoride in there, then that's their problem. But bottled water sales will go down," he said.
"It's a bit disappointing but at the very least it should be labelled so I can still buy non-fluoridated water."