How much flouride is in city water?

In let's say L.A. And when you ingest the flouride in city water where do the chemicals go? Is the amount small enough to p through the system? Or does is the body unable to get rid of it? And if so where does it store the flouride in the body? And if it stores the chemicals im uming it acilates? And if it acilates i ume it will cause adverse reactions to your body?