How water bills work
What you actually pay for, why metered and unmetered bills differ so much, and why cross-country bill comparisons are usually meaningless.
A water bill in England and Wales typically has four components, and only one of them varies with how much water you use.
- Water standing charge
- A fixed charge for being connected to the supply, covering metering, billing and a share of network costs.
- Water volumetric charge
- A rate per cubic metre of water supplied. Only applies if you are metered.
- Wastewater standing charge
- A fixed charge for the sewerage connection.
- Wastewater volumetric charge
- Usually charged as a percentage of measured water use, on the assumption that most of what comes in goes out. Often around 90–95%.
- Surface water drainage
- A charge for rainwater draining from your property into the sewer. Can sometimes be removed if your property genuinely does not drain to the public sewer.
Metered versus unmetered
Unmetered bills in England and Wales are based on the property’s rateable value — a property tax assessment last updated in 1990. It bears no relationship to occupancy or consumption, which is why identical households in different houses can pay very different amounts.
As a rough guide, a metered bill tends to be lower where there are fewer people than bedrooms, and higher where the reverse is true. In England and Wales, households can request a meter and, in most cases, revert within a set period if the bill turns out higher.
Why bills rose sharply in 2025
The 2025–2030 price review period substantially increased allowed expenditure across the industry, largely to fund storm overflow reduction, network renewal, new reservoirs and environmental obligations. Bills rose accordingly, because in the England and Wales model virtually all investment is recovered from customers rather than from taxation.
Bills are not comparable across countries without stating the currency, the year, whether wastewater is included, whether the household is metered, and what average consumption is assumed. Some countries fund water partly through general taxation, which does not appear in the bill at all.
View the data behind this chart
| Period | United Kingdom (currency/yr) |
|---|---|
| 2020 | 396 |
| 2021 | 408 |
| 2022 | 419 |
| 2023 | 448 |
| 2024 | 473 |
| 2025 | 603 |
Why international comparisons rarely work
Help if you cannot pay
All water companies in England and Wales operate social tariffs for low-income customers, and the WaterSure scheme caps bills for metered households with high essential use due to a medical condition or a large family. Take-up of these schemes is consistently well below eligibility, which makes checking worthwhile.
Sources
- Water Services Regulation Authority — Water company performance and price review data. Open — attribution required · Open Government Licence v3.0
- Consumer Council for Water — Water bills, affordability and complaints data. Open — attribution required · Open Government Licence v3.0
- Water Industry Commission for Scotland — Scottish water industry economic regulation. Open — attribution required · Open Government Licence v3.0