Scientific reviews over many years have shown that water fluoridation is an effective and safe public health measure. It is known that consuming fluoride in water at levels permitted by United Kingdom legislation, whether as a result of fluoridation or present naturally, can contribute to the risk of dental fluorosis, as can other sources of fluoride such as toothpaste if swallowed in excessive amounts.
In 2014 Public Health England published Water fluoridation Health monitoring report for
England, acting as guidance for dental teams on the prevention of dental disease in their patients. This included advice on reducing the risk of dental fluorosis from toothpaste ingestion among their patients, in particular young children. A copy of this guidance is attached.