Another great RocketTheme Joomla Template brought to you by the RocketTheme Joomla Template Club.
Home Home Rainwater
Rainwater Print E-mail

Rainwater Benefits

The number one reason for installing a rainwater tank in Australia is to save water according to the latest rainwater tank figures from the Australian Bureau of Statistics' (ABS).  

Rain water tanks and collection systems

Rainwater storage tanks have been a highly successful source of harvesting water supplies for isolated properties, small communities and in rural areas of Australia for over 200 years.

However, in Metropolitan areas there are other factors that need to be considered to ensure that the rainwater you harvest can be used to its full potential. Water quality is a potential problem with all roof water systems due to:

  • Atmospheric pollution

  • Bird and possum droppings

  • Insects and other small animals

  • Roofing materials and paints

  • Detergents and other chemicals (ie fibrous cement roofs - lime contamination)

 

Deciding why you want to install a rainwater tank?
A Plumber can advise how a rainwater tank can:

  • Save you money on water bills

  • Help the environment

  • Collect and conserve water supplies from the rain

  • Help in a fire fighting situation

  • To use rainwater inside your home - Using rainwater indoors (66kb PDF)

 

4 factors which primarily determine the reliability of rainwater tank supply are:

  • Local rainfall patterns in your area - View the Australian Rainfall Table

  • Roof catchment area and down pipe location (you may only be capturing 1/6 of your roof area)

  • Demand for water (there might be a better year round use for the water such as toilet flushing)

  • Rainwater tank capacity

  • Use H2OmeCalc to calculate your household's portential rainwater harvest

 

Householder / Plumber Checklist

  • Measures to prevent access to children to reduce the risk of accidental drinking and entry into the tank

  • Ensure that rainwater is not connected to the reticulated supply, (backflow prevention - dual check valve)

for further information visit www.greenplumbers.com.au

 

Tank Materials
Rainwater tanks can be made from a range of materials including concrete, plastic (polyethylene), or steel. 

In the following video, Stuart Heldon from TankWorks shares some of the benefits of steel rainwater tanks.

Maintenance
Filtration and water treatment

 

Top

Urban Rainwater Statistical Data Communication 

Proposed Regions

 

Rainfall month of August

Rainfall

Year to Date (October 2004) YTD

YTD

Potable water saved by using rainwater

 

NSW

Sydney

Newcastle

Wollongong

 

 

35mm August

 

500mm

 

 

YTD

.50x100x.9x1000

 

= 45,000 ltrs

 

Example YTD rainfall 500mm

0.50 x 100m2 x 0.9 x 1000 =45,000 ltrs harvested

 

A family of 4 would have had enough rainwater harvested during the past 9 months in Sydney  to complete all the laundry washing and toilet flushing use.

 

Or they could have had 75 hrs of garden watering

 

SA    Adelaide

 

35mm August

YTD 300mm

=   27,000ltrs

 

WA   Perth

 

150mm August

YTD 600mm

= 54,000 ltrs

 

Queensland

Brisbane

Gold Coast

 

 

25mm August

 

YTD 1000mm

90,000ltrs

 

Victoria

Melbourne

 

75mm August

YTD 500mm

= 45,000 ltrs

 

 

Rainfall data sourced from Commonwealth Bureau of Meteorology   www.bom.gov.au

 

Assumptions:

Harvested Rainfall data based on 100m2 roof catchment area.

90% runoff into rainwater storage unit.

Toilet Flushing

Based on family of 4 with 6/3 dual flush toilet suite – using 30,000ltrs / year,

2500ltrs / month

Laundry Washing

Based on family of 4 people, 4 loads per week, medium automatic top loader -  using 28,000ltrs / year

2350ltrs / month

Garden Watering / other outdoor use

Based on 1 hour water at 10ltrs/min 600ltrs/hr  (hand held garden hose)

Last Updated on Thursday, 15 May 2014 16:20
 
   © Copyright Australian Rainwater Industry Development Group | Legal Notices | Sitemap