Water Usage Calculator
To estimate the amount of water your household consumes, fill out the form below and press the Calculate button.
You can use this form to see where you can reduce your water consumption by limiting shower times, installing new water fixtures, and reducing the number of laundry & dishwasher loads.
Total number of people in your household. (Required)
persons
Bathroom Water Use
How many showers per day on average does each member of your household take?
showers
What is the average length (in minutes) of each shower? (10 minutes is average)
minutes
What is the flow rate (litres per minute) of your showerhead?(9.5 for standard showerheads)
litre/min
Total number of baths taken each week in your household.
baths
Toilet Water Use
What is the average number of times each person flushes a toilet in your household per day? (4 is average)
flushes
How many litres does your toilet use per flush? (6 for standard toilets 4.5 for dual flush toilets)
litres
Water Taps Use
How many times each day does each household member use water taps to shave,(3 is average)
times
How many minutes on average does the water run during each use? (1 minute is average)
minutes
Washing Dishes
Dishwashing Water Use
How many times are dishes washed by hand each day?
times
How many minutes on average does the water run during each dishwashing?
minutes
If you have a dishwasher, how many times is it used each week?
times
The average dishwasher uses 25 litres of water per load. Change this number if yours is different.
litres
Laundry Water Use
How many loads of laundry are done by members of your household each week.
loads
The average new top loading washing machine uses 50 litres of water per load, old ones may take 100 litres, change this number if yours is different.
litres
Lawn Water Use
How many times is your lawn watered through a sprinkler system each week?
times
How many minutes is the lawn watered per watering? (Usage is 16 litres per minute for 2 taps)
minutes
How many minutes on average do you use your outdoor water taps per week? Include washing the car, topping up the swimming pool and other use (usage is 8 litres per minute).
minutes
