If your water supplier is Severn Trent Water it is likely that your area (postcode) is fluoridated.
You should only pay for waste water because fluoridation turns water into a medicinal product.
In this case you do not and should not pay for water charges.
You pay for drinking water not a medicinal product.
Tap water should not be a medium of delivery of toxic substances into your body.

To check if your water is fluoridated visit Severn Trent website at this LINK.
Type in your postcode and press “CHECK MY WATER”.
Below the system displays the report.
In the “Water Quality Summary Report” search for “Fluoride“.
Many post codes covered by STW are fluoridated between 0.3-1mg of fluoride per 1litre of water.

Below is the map of the Severn Trent Water’s coverage (blue). You can zoom in on the map.

Why you should not pay them for what they “sell” to you and how to begin the process of withholding water charges with STW please read the following article here.
If you are not up for it then at least please spread the word, write to your local or national representative (please feel free to use available templates) and consider joining the legal action at Kingfisher Justice.

Join the movement to save you and others from harmful toxins.
Under the guise of protecting your teeth a water company disposes industrial waste and let you drink and bathe in it!

It’s not only that the majority of countries in the world do not fluoridate public water but there is no fluoridation in most of England and no water fluoridation in Wales and Scotland.
If fluoride is so beneficial and since it’s also an industrial waste that can be obtained for cheap or even for free why the Englishmen and women from South, the Welsh and the Scottish people are not interested to have it in their drink?
Spread the word.

Still not convinced? Read and watch about fluoride and oral health or head to Chemistry Corner.

The most up to date map of fluoridation (industrial waste disposal) in England:

The list of post codes that are fluoridated: