Water Bill Calculator
Estimate your water bill from daily household usage in litres and your water tariff. Includes usage benchmarks, per-person breakdown, and tips to reduce your bill.
Your usage & tariff
UK average ~£1.50–£2/m³ = ~0.15–0.2p/litre. Check your bill for your exact rate.
Usage estimator — build your daily total
Not sure how much you use? Enter quantities below and we'll calculate your daily total.
Your water costs
Usage in context
How your household compares to UK averages.
UK average: ~142 litres per person per day. Source: Water UK / Ofwat.
Cost per person
Where does your water go?
Estimated breakdown of a typical UK household's daily water use.
Monthly cost projection
Water bills tend to be fairly consistent year-round, with a small summer increase due to garden use and higher temperatures.
Ways to reduce your water bill
Savings estimates are illustrative and based on typical UK household usage patterns.
Metered vs unmetered — which is better for you?
Unmetered bills are based on rateable value, not actual use. Use the rule of thumb below.