The council heard how the cost of a similar judicial review in Hamilton could see a "six-figure cost" of at least $100,000.
"The process could be a six to nine-month process if it is appealed," said
Nearly 70 per cent of Hamilton voters favoured water- fluoridation in a non-binding referendum held alongside local body elections last month.
Councillors had three options to choose from including whether to add or remove fluoride from the city's water supply.
They were also asked to consider whether the city should recommence fluoridating the water supply while providing a non-fluoridated water source.
The council held hearings on fluoridation earlier this year, with only 11 percent of the 1557 submissions wanting to retain fluoride, while 89 percent wanted it scrapped.
It voted to remove fluoride in June following a 7 to 1 decision from a tribunal made up of Hamilton councillors.