This is a charge for the amount of wastewater (waste and greywater) you put into the wastewater network via the sinks, drains, toilets and appliances such as washing machines and dishwashers.
It is effectively a charge for your 'use' of Unitywater's wastewater services, as it pays for the treatment and disposal of your wastewater, which is transported by wastewater pipes and pump stations to our wastewater treatment plants. Your wastewater is put through stringent cleansing processes to ensure that its disposal is safe for our community and the environment, and complies with very strict environmental legislation.
This charge also contributes to the 24-hour emergency response service we provide to our customers 365 days a year.
Find out more about what happens after you flush.
Wastewater usage is a variable charge because it is based on the amount of water used at your property. As there is no meter to measure the amount of wastewater, it is calculated as being 90% of your average daily water usage (as measured by your water meter), and is charged at the price per kilolitre (1000 litres).
In other words, we estimate that 90% of the water that comes out of your taps, shower, bath, toilet, dishwasher and washing machine goes into the wastewater network. This charge is capped when wastewater usage reaches 740 litres per day for residential customers. The cap limits the impact on high water users and anyone who may have a concealed leak on their property.
More information on pricing for your region.
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Number of people in household
(based on average water usage of 167 litres per person per day)
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Cost per day to remove, treat and dispose of wastewater
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1 person
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12 cents per day
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2 people
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24 cents per day
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3 people
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37 cents per day
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4 people
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49 cents per day
(that’s just $178.49 per year)
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Wastewater usage for residential customers is capped at 740 litres per day to limit the impact on high water users and anyone who may have a concealed leak on their property.
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54.2 cents is the maximum daily usage charge any household will pay for removing, treating and disposing of wastewater (that's just $197.83 per year).
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As well as removing and treating wastewater for you, we build, maintain and replace the wastewater pipes, wastewater pump stations, wastewater treatment plants and other wastewater infrastructure for approximately $2 per day. This is what your wastewater access charges on the bill pay for.
Everyone can play a part in helping us to reduce our operational costs by simply thinking at the sink. Be mindful about everything you’re flushing or putting down the sink or drain.
And definitely no wet wipes down the toilet. They are NOT flushable (even if the packaging says so)!
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