Rain barrels and cisterns · Western Australia

Water Corporation Regional Rainwater Tank Rebate

Run by Water Corporation

OpenLast checked October 22, 2026
What you get
Up to $1,000 for a new tank plus plumbing; up to $500 to plumb in an existing tank or replace a plumbed-in tank (or the cost if less)
Maximum
$1,000 per household
Who qualifies
Owners of properties in eligible South West and Great Southern towns connected to Water Corporation scheme water; renters need the owner to apply.
Where
Water Corporation customers in listed South West and Great Southern towns on scheme water.
Status
Open. Open from 1 June 2026 until program funds are exhausted.
Type of payment
Bill credit
Official program page

What you do

Buy a rainwater tank of at least 2,000 litres and have a licensed plumber connect it to your toilet and/or washing machine, or plumb in an existing tank.

Requirements

  • Tank of at least 2,000 litres
  • Plumbed into the toilet and/or washing machine by a licensed plumber or restricted permit holder
  • Installed to AS/NZS 3500.1 with adequate mosquito controls
  • New tanks must be bought and plumbed in during the offer period
  • Invoices must show the plumber's details, tank capacity, and certification that the tank meets standards and is plumbed in and fully operational

How to apply

  1. 1Buy and install the tank with a licensed plumber
  2. 2Complete the online application form on the Water Corporation website
  3. 3Upload paid invoices or receipts for the tank and the plumbing
  4. 4Wait up to 8 weeks; approved rebates are credited to your Water Corporation account

Timing and deadlines

Applications take up to 8 weeks to process.

Open from 1 June 2026 until program funds run out

Sources

Last checked October 22, 2026. See something out of date? Tell us.

Sow is not affiliated with any of these agencies or utilities. Amounts and rules change, often at the start of a fiscal year, so confirm the details on the official page before you start a project. How we research these programs

Free to cite

Quote it with credit and a link to this page. The amounts and rules come from Water Corporation's official page, linked above, so check it before you publish.

Source: Sow, “Water Corporation Regional Rainwater Tank Rebate,” Yard rebates directory, checked October 22, 2026, https://www.usesow.com/rebates/western-australia/water-corporation-regional-rainwater-tank-rebate

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