Here we explain the annual pricing review process, how water prices are set and how rateable value is used.
Changes to our prices for 2018–19
The State Government reviews and sets our prices each year as part of the State Budget. The cost to provide water, wastewater and drainage services and how the changes will impact you influence the Government's decision making.
From 1 July 2018, Perth households using 240kL (240,000 litres) of water per year will have an overall increase per year of 5.5% or approximately $15 on your 2-monthly bill.
There will be an increase of 3% to water service charges and drainage and wastewater service charges will increase on average by 6%.
A 6% increase will apply to charges for water use up to 500kL (500,000 litres) per year, and a 40% increase will apply to charges for water use above 500kL (500,000 litres) per year.
Increasing charges for high water use by 40% emphasises the importance of using water wisely in our changing climate. In 2016-17, the average household water use in Perth was 223kL (223,000 litres). The 40% increase in water use charges will only affect those households using more than double the average household water use.
Increases for regional customers
In regional areas, bills include 2 services charges – water and wastewater (if applicable). From 1 July 2018, water service charges will increase by 3%, and wastewater service charges will increase on average by 6%. Drainage charges do not apply to regional customers.
Customers living in the south of the state will have a 6% increase will applied to charges for water use up to 300kL (300,000 litres) per year, and a 15% increase applied for water use above 300kL (300,000 litres) per year.
Customers living in the north of the state will have a 6% increase applied to charges for water use up to 500kL (500,000 litres) per year, and a 15% increase applied for water use above 500kL (500,000 litres) per year.
Aside from metropolitan and regional variations there are certain groups of customer who have different charges or discounts that apply. You can view the pricing variations list for more details.
Calculate your bill and charges
You can use our online bill and charges tool to calculate service and water use charges for your home.
Your bill & charges
We are here to help
We understand the impact these changes may have. We look at every situation on a case-by-case basis and have a range of flexible payment options that can be tailored to meet your needs.
We use the rateable value of your property to calculate the wastewater and drainage charges.
The rateable value is based on the annual rental value of your property, which is what you might receive if you leased out your property, or by a percentage of the vacant land value. Landgate Property Valuation Services provide this figure.
The calculation of a rateable value for a residential property is based on a number of factors, such as:
- proximity to services (schools, public transport, shops etc)
- age and functionality
- additional facilities
- provided accommodation
- size and area
- age of property.
For residential vacant land and other specialised properties, the rateable value is based on 3% of the property's capital value, or the amount the land and any buildings might reasonably sell for.
Properties in the metropolitan area are revalued every 3 years, and regional areas are revalued on a recurring basis dependent on local governments.
There is also a process each year, which assesses properties that have had additions or improvements done.