Fluoride is naturally occurring and often may be added to municipal water systems. At an optimum level of 1 mg/l, it has been shown to be effective in reducing dental cavities. Federal law requires a community well system to notify users when monitoring indicates that fluoride in the user's water exceeds 2 mg/l. The current allowable level is 4 mg/l. Fluoridated water is somewhat controversial. You may want to remove fluoride from your drinking water for personal/health reasons
. Reverse Osmosis systems
will reduce the fluoride in drinking water.