Rainwater Harvesting & Selection Guide
In many circumstances water tanks are the sole provider of water to a household and the last thing you want is to run out of water. If you follow this guide it will help to ensure an ongoing water supply even in times of water storage.
A good guide is that 1mm of precipitation on your roof equals 1 litre per square metre of roof area.
Household Water Requirements - Indoor
Household Water Requirements - Outdoor