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The level of fluoride added to municipal drinking water is set at 0.9 milligrams per liter, the level recommended by the Colorado Department of Public Health and Environment. The city recognizes that additional research on fluoride has been completed in recent years by the the U.S. Department of Health and Human Services (DHHS) and the U.S. Environmental Protection Agency (EPA), which could lead to a new regulatory recommendation by the EPA. While the DHHS recently recommended an "optimal level" of 0.7 milligrams per liter, the EPA sets the regulatory maximum levels for public drinking water supplies.
