Anecdotally tank installers report a considerable uplift in demand over summer, while leading tradie jobsite hipages recorded a spike of rainwater tank inquiries by 63 per cent over January and February compared to previous monthly averages.

Installers suggest the uplift is due to a combination of a wet summer and the introduction of rebates in many local government areas.

“We’ve seen a steady increase,” says Hannu Ketola of Aquarius Water Masters.

“More people are starting to understand that the best quality water is delivered for free.”

Mr Ketola says increased environmental awareness and generous rebates have led to spikes in large LGAs such as Randwick in Sydney, and councils around the country are also offering installation incentives.

“Rainwater is so much better than chlorinated town water. And the equipment and mains water switches are cheaper and better quality than a few years ago,” he said.

A first flush system sitting between the gutters and the tank ensures only clean water reaches the tank.

Even so, tanks should be cleaned every three years, he cautions.

By using collected rain water for the garden, washing cars, rinsing feet and inside, for laundry and toilets, you can save on mains water and utilities bills.

Mr Ketola says an obligation-free quote is essential as every property has different requirements. “A lot of people get one tank and then install more,” he says.

The amount of water captured will depend on roof area and average rainfall. For example, a 10m x 10m roof will yield an average of 130,000L per annum in Sydney.

Regulations and incentives vary from state to state so check with your local council.

Some councils offer tank rebates between $300 and $1000.

Expect to pay from $800 for a 2000L slimline polyethylene tank to $1094 for a 2000L steel water tank. Labour starts at $350 for a simple install.

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