Reviewed by Mustafa Bilgic
Founder, WebCalculator · Last updated 26 July 2026
Default rates are illustrative. Check your water company's current tariff for exact rates. Average bill figure from Ofwat. Not financial advice.
Estimate your annual water and sewerage bill based on your household size, daily usage and whether you have a water meter. Rates vary by supplier — enter your own rates from your bill for an exact figure, or use the defaults based on national averages. The average UK household pays roughly £473 a year for water and sewerage combined.
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If you have a water meter, your bill has two parts: a fixed standing charge plus a volumetric rate per cubic metre of water used. You also pay a separate standing charge and rate for sewerage (wastewater). Rates are set by your regional water company and approved by the regulator Ofwat.
For help budgeting your other household costs, see the energy bill calculator or the mortgage calculator.
The average combined water and sewerage bill in England and Wales is roughly £473 per year (about £39 per month) for 2025/26 according to Ofwat. Bills vary significantly by region and household size.
Usually, yes — especially for smaller households. A single person or couple typically saves money on a meter because you only pay for what you use. Larger households using more water may find unmetered bills cheaper.
Metered bills have a fixed standing charge plus a per-cubic-metre rate for water supply, and a separate standing charge plus rate for sewerage. You are billed based on actual meter readings. One cubic metre equals 1,000 litres.
The average person in England uses about 144 litres per day according to Ofwat. That covers showers, baths, toilet flushing, washing machines, dishwashers, cooking and drinking.
No. Unlike energy, household water supply in England and Wales is provided by a regional monopoly. You cannot switch supplier. However, you can request a free water meter to potentially reduce your bill.
No. Domestic water and sewerage services are zero-rated for VAT.