Water meter or fixed bill: how to decide which may cost less
How to compare a water meter with an unmetered or assessed bill using household use, high essential needs and the regional company’s trial rules.
Last reviewed: 6 July 2026 · UK guidance
In brief
A meter often helps smaller households with moderate use, but can increase costs for large families or high essential water use. The only reliable comparison uses the company’s current charges and realistic consumption.
Check WaterSure and social tariffs before deciding. If a meter cannot be installed, the company may offer an assessed charge. Trial or switch-back rights depend on current rules and circumstances.
Estimate actual use
Count residents, baths or showers, laundry, dishwasher, garden and disability-related use. Use the company calculator cautiously and ask for the standing and volumetric charges.
Check the property
Shared supply, flats or access can prevent installation. Ask whether the meter is compulsory after moving, who pays installation and how leaks are handled.
Model support schemes
Compare the standard meter bill, WaterSure cap, company social tariff and unmetered charge. A social tariff may make the meter decision less important.
Record review rights
Ask whether and when the household can return to an unmetered basis, what happens for a new occupier and how bills are estimated during the first period.
A meter comparison request
Use with the regional water company.
Please provide a written comparison of my current annual charge, estimated metered bill, standing and usage charges, WaterSure, social tariff and assessed-charge options. The household has [number] people and high essential use due to [reason]. Confirm installation, leak and switch-back rules.
A practical checklist
- Estimate realistic household use.
- Check property installation limits.
- Compare support schemes too.
- Get trial and switch-back rules in writing.
Check the current information
These are the most relevant official or specialist places to confirm live rules, availability and application details.
ccw.org.uk
Open official informationofwat.gov.uk
Open official informationmoneyhelper.org.uk
Open official informationChoose one next action
You do not need to finish everything today. Find a relevant organisation through National Help, or save the action you want to return to in your Support Plan.
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