Q: Why do we need to remove excessive fluoride from drinking water?

The US EPA has set a Maximum Contaminant Level (MCL) for fluoride in drinking water at 4.0 mg/L and a secondary limit of 2.0 mg/L because fluoride can cause chronic health issues such as bone and tooth density loss, heart problems, respiratory disease and cancer at higher levels. More and more communities are taking steps to remove excess fluoride from drinking water due to these known health concerns.