Food / Is water in Warsaw artificially flouridated? [6]

My husband and I are movin to Warsaw in a week and I'm trying to figure out f there's anything I should bring with me or buy Immedietely when we get there. I am concerned about flouridated water. Almost all city water in the USA contains flouride. I have heard only 4% of polish water is flouridated but I was wondering if that 4% is in Warsaw. If so I'll need to get a pretty heavy duty filtration system or buy bottled

For a while. Any insight would be very helpful.

If no one knows the answer can anyone help me find the water authority so I can ask them?