Drinking water quality
We use the same water today that was on the planet billions of years ago – it just gets recycled.
About your water
Water quality standards
Re-opening: protect your water hygiene
How we treat water
Issues with your water's taste or smell
Issues with your water's colour
How hard is your water?
The hardness of water depends on the amount of naturally occurring minerals such as calcium and magnesium. Use our postcode checker below to find out the hardness of your water.