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Fluoride

Fluoride is naturally present in all water supplies at varying levels. Some water supplies contain fluoride naturally, for instance where water is taken from an underground source where the water has passed through rocks with fluoride containing minerals in them. The natural background level of most source waters in the UK is below 1 part per million (mg/l).

Why is fluoride added to water?

Fluoride is added to water in some areas at the request of local health authorities. Where we add fluoride we increase the natural background levels to 1 part per million (1 mg/l). Should a health authority want to introduce a new scheme they must consult the public first.

On 1st April 2013 the Secretary of State for Health became responsible for existing fluoridation schemes, and local authorities became responsible for proposing and undertaking consultation on new schemes or changes to existing schemes. The performance of dosing plants and achievement of target levels of fluoride in water supplies is independently reviewed every month by the relevant health authority.

Who pays for fluoridation?

The health authorities. The costs for this are not included in our water charges.

How is fluoride added?

Fluoride is normally added as a diluted solution or as a powder at the water treatment works. Special control systems make sure it does not exceed the maximum allowed level from European standards. The fluoride is purchased against precise quality criteria and we follow strict guidelines set down by the Government.

Which areas supplied by Severn Trent Water are fluoridated?

The exact areas fluoridated may vary from time to time according to our agreements with the local health authorities. In general about 45% of the water we supply is fluoridated. You can view the fluoride map to see which areas in our region receive fluoridated water.

Alternatively you can also use the water quality search to see how much fluoride is in your water.