Water Calculator

Discover your household’s estimated average water use and costs.

Water Calculator

Let's estimate your water use

This tool estimates your water use based on the information you provide, using average figures from the Consumer Council for Water (CCW). We also use figures from Water Wise to provide more information about water use. Water use can vary widely between households so the tool can only provide an estimate. Costs are based on metered tariffs and may not reflect your actual bill.

If you’re on a Helping Hand or WaterSure tariff your charges are capped. Find out more about help with your bills.

Find out how we use your data in our privacy notice.

How many people live in your home?
On average, each person uses about 11,000 litres of water per year.
Washing machine uses per week?
Each load of laundry uses around 56 litres of water.
Dishwasher uses per week?
A single dishwasher cycle uses about 25 litres of water.
Baths per week (whole household)?
A typical bath uses around 80 litres of water.
Showers per week (whole household)?
Each shower uses about 46 litres of water on average.
Toilets flushes per day (whole household)?
Every flush uses approximately 7.5 litres of water.
Full sinks or buckets used for personal washing or food preparation per week?
Each time you use a bucket or sink, it uses about 16.5 litres of water.
How often do you use a garden hose (days)?
Using a hose for an hour can use up to 800 litres of water.
For how long each time (hours)?
Multiply the hours by the days to calculate total water usage.

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Start saving water in the home and garden today!

Simple actions - like turning off the tap while brushing - can make a big difference.

Quick water saving tips