Updated with 2022-23 charges

  • If you are thinking about switching to a water meter, please use our calculator to see if you might be able to save money. If you do decide to switch, please contact your water company.
  • If you choose to switch to a water meter you will usually have a trial period of 24 months during which time you can switch back to your old fixed charges.  This option is not available in areas of England where compulsory metering is being introduced.
  • If your water company cannot fit a meter, you may benefit from an assessed charge.
  • If you already have a meter, use the calculator to see how different elements of your daily water use can be reduced to potentially make further savings.
  • If you rent your home you are still entitled to have a meter fitted providing your tenancy agreement is for six months or longer.
  1. 1

    Your water company details (required *)

  2. 2

    Your sewerage company details

    The most likely company to charge you for the sewerage element of your bill is shown below. Use the drop down box below if you know this to be different.

  3. 3

    Water use

  4. 4


    Please tick the services you want to include in the calculation.

  5. 5

    Current charges

  6. 6

    Additional information

    To help us identify areas where consumers are considering getting a meter, please provide your complete postcode (optional)

Tell us what you think about the meter calculator. Fill in the survey ▶


Most companies have their own water meter calculators which are based on regional water usage and may give you a more accurate estimated bill depending on your water use. We would therefore recommend checking with your water company before finally requesting a water meter to be fitted. If you choose to have a water meter, water companies install meters for free and generally customers can switch back to the unmetered charge any time within 24 months if they are unhappy with the change (not applicable to customers of Affinity Water Southeast, South East Water or Southern Water). If a meter cannot be fitted companies can offer an alternative unmeasured tariff which may be lower than the current bill.