rain-water-tanks

Rainwater Harvesting

Why you should install a rainwater tank

  • More than enough water falls on most average size house roofs each year to supply all household water needs
  • Because it reduces the storm water running into the ocean with the pollutants it collects along the way
  • Many councils around Australia will require that you do it as part of any new building or substantial renovation
  • The water you collect can safely be used for anything from garden watering, toilet flushing, clothes washing to showering, kitchen and drinking
  • The less mains water you (and everyone else) uses the less energy is spent building and operating new dams/water desalination plants

Tank size

  • Your tank size will depend on how much water you use and how much you can collect
  • How much water you can collect will be determined by your roof area and the average annual rainfall of the area in which you live
  • How much you use will depend on how many services you decide to connect to your rainwater tank and your usage patterns. You can gain a basic understanding of your water consumption from your quarterly water bills.
  • Both of the books below provide charts to help you calculate tank sizes. Stratco provide an online tank sizing tool.

Maintaining water quality

A number of products are available that passively assist in maintaining the quality of the water in your tanks:

Rebates

Rebates are generally subject to tank size and the number of services connected. In most states rebates are not available where tank installation is part of a major renovation (eg subject to council requirement/approval).

  • National: National Rainwater and Grey water initiative provides up to $500. Independent of state based grants.
  • ACT: Up to $1000 subject to tank size and requires at least one internal service connected
  • NSW: Up to $1500 subject to tank size and number of services connected.
  • NT: Up to $1900 subject to tank size, number of services, installation of new guttering.
  • QLD: No state based rebates available. See National above.
  • SA: Up to $1000 subject to tank s
  • TAS:┬áNo state based rebates available. See National above.
  • VIC: Up to $1000 subject to tank size and number of services connected
  • WA: No state based rebates available. See National above

Where to buy

Useful websites

See also