
Understanding water bills in the UK, how they're calculated, different charging methods, and what you're paying for.
A water bill is what you pay for the water you use in your home and for the wastewater (sewage) that goes down your drains. Unlike energy bills, you can't usually choose your water supplier - it depends on where you live.
In England and Wales, water companies are regional monopolies, meaning each area has one supplier. In Scotland and Northern Ireland, water is provided by public bodies.
Your water bill covers two main services:
Water supply:
Wastewater services:
Some bills also include surface water drainage (rainwater that runs off your property into public drains).
Water bills are calculated differently depending on whether you have a water meter or not.
Metered billing:
Example:
Unmetered billing (rateable value):
Unmetered billing (assessed household charge):
A water meter is usually cheaper if:
Unmetered is usually cheaper if:
You can request a water meter for free in most areas, and you usually have 12 months to change your mind and switch back.
For metered customers:
For unmetered customers:
Water bills are usually:
You can usually choose your payment frequency, though annual payment may offer discounts.
If you're struggling to pay your water bill:
Water companies have a duty to help customers who are struggling, so don't ignore the bill - contact them.
In England and Wales:
In Scotland:
In Northern Ireland:
However, you can switch between metered and unmetered billing in most areas.
If you have a meter, you can check your usage:
If you have a meter:
If you don't have a meter:

Consumer Affairs Writer
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