Household Leak Cost Calculator
Instantly estimate the financial and environmental cost of a household water leak based on drip rate, duration, and your local water tariff.
Estimate Your Water Leak Costs
Enter the type of leak, how long it has been occurring, and your water rate below to get an instant breakdown of wasted water volume and financial cost.
Leak Cost Estimator
Enter leak details to see the estimated water waste and cost
Estimated time the leak has been ongoing.
UK average is ~£4.00 – £5.00 per m³ (1,000 L).
Estimated Leak Cost
Based on your input parameters
Common Leak Water Wastage
Typical baseline flow rates and estimated yearly waste for common household leaks (based on a continuous 24-hour leak at £4.50 per m³).
| Leak Type | Flow Rate | Yearly Waste | Est. Yearly Cost |
|---|---|---|---|
| Slow Dripping Tap | 1 L/hr | 8,760 L | ~ £39.42 |
| Fast Dripping Tap | 4 L/hr | 35,040 L | ~ £157.68 |
| Steady Stream (Tap) | 20 L/hr | 175,200 L | ~ £788.40 |
| Running Toilet (Silent) | 200 L/hr | 1,752,000 L | ~ £7,884.00 |
| Burst Pipe (Moderate) | 500+ L/hr | 4,380,000+ L | ~ £19,710+ |
Water Leak Cost FAQ
Everything you need to know about calculating, identifying, and managing household water leaks.
A slow dripping tap can waste around 1 to 4 litres of water per hour. Over the course of a year, this adds up to between 8,700 and 35,000 litres of wasted water, which can significantly and unnecessarily increase your water bill.
To calculate the cost, determine the leak’s flow rate in litres per hour, multiply by 24 hours and the number of days it has been leaking to get the total litres. Divide by 1,000 to convert to cubic metres (m³), then multiply by your water supplier’s rate per m³.
Yes, a silently running toilet can waste up to 200 litres of water per hour or more. This can result in thousands of litres wasted every single week, leading to a surprisingly high spike in your water bill if left unaddressed.
Your water and sewerage tariff rate can be found on your latest water bill, usually expressed as a cost per cubic metre (m³). You can also find this information on your local water supplier’s website or by contacting their customer service department directly.