Water fluoridation is not mandatory, and although there is a recommended fluoride concentration in drinking water (0.7 milligrams per liter) from the CDC, that is not an enforceable standard.

A chart showing the percentage of public water supply sourced from groundwater in New York predicted to have PFAS contamination. Up to 94 percent of the public water supply sourced from ...

Science & Environment Umatilla, Morrow counties begin to chart a path to clean drinking water for Lower Umatilla Basin residents By Antonio Sierra (OPB) March 14, 2024 6:10 p.m.