Did you know, installing a rainwater tank could save you up to 20% of your in-house water use each year? A 125m2 roof area can collect up to 51,000 litres of water annually, helping to supply part of your household’s water needs.

To help you save precious water and adapt to climate change, we’re offering a rebate on the cost of purchasing, replacing, or plumbing in an existing rainwater tank to your toilet and/or washing machine.

This rainwater tank offer is available to eligible customers until 31 May 2022.

Where to start?

There are a few things to consider before you buy a rainwater tank. How much does a rainwater tank cost? What size rainwater tank do you need? To help you get started, read our quick guide to rainwater tanks.

Rainwater tank offer

This waterwise rebate is available to Water Corporation customers connected to scheme water in the following locations: Balingup, Bridgetown, Boyup Brook, Cranbrook, Donnybrook, Gnowangerup, Greenbushes, Hester, Hopetoun, Jerramungup, Kirup, Kondinin, Kulin, Lake Grace, Manjimup, Mullalyup, Nannup, Newdegate, Northcliffe, Nyabing, Pemberton, Pingrup and Ravensthorpe.

If you’re eligible, you can apply for one of the following rebates:

  • New rainwater tank and plumbing - up to a maximum of $1,000 for a new rainwater tank with a capacity of 2,000L or more that is plumbed.

OR

  • Plumbing in an existing rainwater tank - up to a maximum of $500 for the rainwater tank with a capacity of 2,000L or more.

OR

  • Replacing an existing plumbed in rainwater tank - up to a maximum of $500 for the rainwater tank with a capacity of 2,000L or more.

How to apply for the rainwater tank offer

  1. Complete, sign and submit the application form.
  2. Include a copy of the tax invoice for the purchase of your rainwater tank.
  3. Include the licensed plumber’s declaration, as well as a copy of the tax invoice and receipt for plumbing work.

Apply for a rainwater tank rebate

What the rebate offers

The Water Corporation Rainwater Reward Program offers the following rebates for eligible customers connecting a rainwater tank to their toilet and/or laundry:

  • A rebate of $1000 or the cost of the tank and plumbing (whichever is lesser) is available for a new rainwater tank with a capacity of 2000L or more

OR

  • A rebate of up to $500 or the cost of the plumbing work (whichever is the lesser).is available for an existing tank with a capacity of 2000L or more (e.g. if the plumbing work costs $200, you will receive an equivalent amount).

OR

  • A rebate of up to $500 or the cost of the rainwater tank (whichever is the lesser) for the replacement of an existing Plumbed In rainwater tank with a new rainwater tank with a capacity of 2000L or more. (e.g. If tank costs $200, you will receive an equivalent amount).

Is a rainwater tank right for you?

A rainwater tank can help you save up to 20% of your average household water use when plumbed into your toilet and/or laundry. Rainwater tank yield is dependent on climatic conditions, water collection area (i.e. roof size), household water usage patterns and the size of the tank.

Rainwater tanks are most cost effective in the higher rainfall areas of the state and in these areas around 51,000 litres of water could be collected from a 125m2 roof area and used to supply part of your household’s water needs each year.

The Tankulator can be used as a basic guide to determine which size tank might be best suited for your property.

Please also consider building and local government regulations and contact your Local Government Authority prior to installing a rainwater tank.

Please visit the Department of Health website for up to date information on installing rainwater tanks.

Applicant and property eligibility

To claim the rebate, the applicant must:

  1. Read the Terms and Conditions
  2. Complete section 1 to 4 of the Application Form
  3. Attached copies of tax invoice and receipt and proof of installation costs completed by licensed plumber. Please DO NOT send original tax invoices and receipts; and
  4. Ensure that section 5 of the Application Form is completed by the Licensed Plumber who connected the rainwater tank with the following information:

    - The size (capacity) of the rainwater tank;
    - Certifying that the rainwater tank meets all relevant standards and government requirements;
    - Certifying that the rainwater tank is Plumbed In and fully operational.

Applicants are required to provide evidence to support claims made on the Application Form if requested. The Corporation may conduct audits of tanks to verify program compliance.
The applicant should allow four (4) weeks for the application to be processed. Applications that are incomplete may take longer than four (4) weeks to process.

Customers in the following areas are eligible for the rainwater rebate between 1 October 2021 and 31 May 2022:

Balingup, Bridgetown, Boyup Brook, Cranbrook, Donnybrook, Gnowangerup, Greenbushes, Hester, Hopetoun, Jerramungup, Kirup, Kondinin, Kulin, Lake Grace, Manjimup, Mullalyup, Nannup, Newdegate, Northcliffe, Nyabing, Pemberton, Pingrup, Ravensthorpe, and Wellstead.

To be eligible to receive a rebate, the applicant must:

  • Be the owner of the property where the rainwater tank has been installed
  • Ensure the property where the rainwater tank has been installed is connected to Water Corporation Scheme Water
  • Live in one of the eligible towns for 2021/22 (check website for list)
  • Ensure the property where the rainwater tank has been installed is habitable or will be habitable upon the completion of the building prior to program closure
  • Declare that the installation and connection of the rainwater tank meets relevant standards and government requirements, such as local building restrictions and regulations
  • Have not claimed a rebate through this program before;
  • Be the purchaser of the rainwater tank and the payee of the plumbing expenses; and
  • Submit the completed Application Form and a copy of the Proof of Purchase and installation costs by 31 May 2022.

The property where the rainwater tank has been installed will only be eligible for one (1) rebate over the life of the program, and must be one of the following:

  • residential property
  • non-residential property
  • corporate-owned property
  • charity-owned property
  • school
  • not-for-profit property (such as a sporting club) or
  • government (Federal and State) owned property

The rainwater tank must:

  • be purchased and Plumbed In on or after 1 October 2021 for customers in Cranbrook, Hopetoun, Jerramungup, Ravensthorpe, Wellstead, Lake Grace, Newdegate, Kulin, Nyabing, Pingrup, Gnowangerup; (new tanks)
  • be purchased and Plumbed In on or after 1 October 2020 for customers in Balingup, Bridgetown, Boyup Brook, Donnybrook, Greenbushes, Hester, Kirup, Manjimup, Mullalyup, Nannup, Northcliffe and Pemberton; (new tanks)
  • be Plumbed In to the property by a licensed plumber on or after 1 October 2021 for customers Cranbrook, Hopetoun, Jerramungup, Ravensthorpe, Wellstead, Lake Grace, Newdegate, Kulin, Nyabing, Pingrup, Gnowangerup; (existing tanks)
  • be Plumbed In to the property by a licensed plumber on or after 1 October 2020 for customers in Balingup, Bridgetown, Boyup Brook, Donnybrook, Greenbushes, Hester, Kirup, Manjimup, Mullalyup, Nannup, Northcliffe and Pemberton; (existing tanks)
  • meet relevant standards and government requirements, such as local building restrictions and regulations, according to AS/NZS 3500.1:2003. A link to the standard can be found here - https://www.saiglobal.com/PDFTemp/Previews/OSH/as/as3000/3500/3500.1-2003(+A1).pdf
  • be fully operational;
  • have adequate mosquito controls; for more information refer to https://www.healthywa.wa.gov.au/Articles/U_Z/Water-tanks-on-your-property 
  • have a minimum capacity of 2000 litres

* The total value of rebates offered is limited and must be claimed over the period of 1 October 2021 to 31 May 2022. Rebates will cease on 31 May 2022 or when the program funds have been expended. Final decisions regarding reward eligibility will be made by the Water Corporation.

Definitions

The following are applied for the purpose of the reward program.

  • Scheme water: water supplied by the Water Corporation through its drinking water supply network.
  • Plumbed in: a permanent connection, installed by a licensed plumber, between a rainwater tank to the internal plumbing for the house (specifically toilet and/or washing machine).
  • Proof of purchase: for example, a receipt or tax invoice for the rainwater tank and/or plumbing services. The receipt or tax invoice must include customer name, address and rainwater tank capacity in litres.