Most water supplies contain some fluoride and in the early 20th century, levels of tooth decay were found to be associated with fluoride levels in drinking water.
This led to the introduction of water fluoridation schemes to add fluoride to water supplies to improve dental health.
Community water fluoridation schemes have operated for over 70 years; the first fluoridation scheme was introduced in the US in 1945. The first substantive UK scheme was established in Birmingham in 1964.
Around 5.8 million people in England receive fluoridated water. This means fluoride has been added to bring it up to around 1mg of fluoride per litre of water, which is a level found to reduce tooth decay levels.
The decision about whether to add fluoride to the water supply is made by individual local authorities. Areas where water fluoridation schemes are currently in place include parts of:
In some parts of the country, such as parts of the North East and Midlands, the public water supply naturally contains a level of fluoride that's similar to that seen in schemes. Some private water supplies contain more than this amount.
Your local water supplier should be able to tell you how much fluoride is in your water supply and whether any is added.Most companies have an online facility where you can use your postcode to check the water in your area.
Over the past 50 years, there have been several reviews of the safety and effectiveness of water fluoridation schemes. Recent largereviews that have been carried out include:
Overall, these reviews found that water fluoridation appears to contribute to reduced tooth decay levels anddoesn't seem to be associated with any significant health risks (see below).
Read about fluoride - a naturally occurring mineral found in toothpaste, drinking water and some foods that can help to prevent tooth decay.
Tooth decay, also known as dental decay or dental caries, is a major health concern worldwide and is still a big problem in the UK. Despite being preventable, it's one of the most common reasons for h
Most water supplies contain some fluoride and in the early 20th century, levels of tooth decay were found to be associated with fluoride levels in drinking water.This led to the introduction of water
There have been some concerns that fluoride may be linked to a variety of health conditions. Reviews of the risks (see above) have so far found no convincing evidence to support these concerns. Howeve