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Email Link   Rainwater Tanks

Rainwater Tanks Rainwater tanks are widely used throughout Australia. In addition to saving large amounts of water for use in the home or garden, other benefits to installing a rainwater tank include:
  • Lower water bills
  • Less reliance on town water supplies
  • Helps you prepare for times of low rainfall, which is particularly important if there are any water restrictions in the Tweed
  • Reducing the intensity and frequency of stormwater runoff from urban areas
Council encourages the installation of rainwater tanks to provide an alternative water source for non-potable water uses such as flushing toilets, washing machines and outdoor water uses like watering gardens and filling swimming pools.


Step 1: Research and planning

Planning A rainwater tank is a significant investment and requires substantial research and planning. If you're thinking of purchasing a rainwater tank, take the time to read Selecting a Rainwater Tank (401kB PDF) for information and advice on:

  • What rainwater can be used for

  • The size of the tank to suit your needs

  • Where you should locate your tank

  • The different manufacturing materials of tanks

  • How much water you can expect to collect in your rainwater tank.

Unsure if you need Council approval for your Rainwater tank? Use the Rainwater Tank Installation Checklist (21kB PDF) and see the FAQ at the bottom of this page.

Council also has a Policy (0 Byte PDF). If your rainwater tank will be installed on a residential property in an urban area and you are connected to the public water supply, you will need to familiarise yourself with this policy. To assist, we've created a FAQs - Rainwater Tanks in Urban Areas Policy (296kB PDF)

There is also a large amount of information on this page, see Available Downloads.

Step 2: Installing your rainwater tank

Plumber Before you start installing your rainwater tank, refer to Installing a Rainwater Tank (467kB PDF) for advice on:

  • The plumbing required
  • Preparation such as foundations and guttering
  • When you should be installing a rainwater tank
  • Accessories required such as pumps, backflow prevention valves and other fittings
  • Basic tank maintenance

Step 3: Maintaining your rainwater system

Mosquito Rainwater systems are a relatively easy system to use. However, It is important that tanks are properly maintained to protect water quality.

Regularly inspect and clean your gutters and screens of leaves and other debris. Gutter guards can also keep this debris out of your rainwater system. Tanks should also be cleaned out every five years or so to remove any solids that may have collected on the bottom.

Tanks are often cited as attracting mosquitoes but a well maintained tank will prevent mosquitoes from breeding. For useful information on caring for your rainwater system and the measures you can take to prevent mosquitos breeding in your rainwater tank, see Maintaining your Rainwater Tank (278kB PDF).

For more information on protecting rainwater from contamination and maintaining rainwater tanks, please see the NSW Health Rainwater Tank Brochure.

Frequently Asked Questions

Do I need approval to install a rainwater tank?

Is rainwater safe to drink?

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