Rainwater tanks

Rainwater tanks can store water run-off from your roof for use around the home or garden. Installing a rainwater tank, together with other household water saving devices, can reduce your household water use by up to 25 per cent, saving you money on water bills and conserving potable water.

While domestic rainwater tanks do not need a building permit, they may require a building and/or planning permit if there are earthworks, retaining walls, or any type of building structure associated with the tank. It is advisable to Contact a Building Officer before starting any work and to keep in mind that a rainwater tank must:

  • be installed by a licensed plumber in accordance with the manufacturer’s specifications
  • be fitted with an overflow pipe of the same diameter as the inlet pipe
  • have the outlet connected to a stormwater drainage system going to the legal point of discharge
  • be a minimum of 500mm from any boundary
  • not be placed over an easement without approval from the relevant authority
  • not be placed over septic systems including sand filters, and
  • must be professionally designed and manufactured to Australian Standards using corrosion resistant, non-toxic materials.

It should also be sealed to prevent insects, vermin and other animals entering and to keep stored water free of leaves, animal droppings, pollutants and other matter.