permaculture

[<permed@nor.com.au>]

>how else would you store water. plastic tank? redwood tank? cement tank?
>does cement leach anything into water? if so which is better cement or
>plastic leaching into the water?

We have 3 different rainwater tanks, 1 plastic, 1 galvinised metal & 1 
cement
the cement tank definitely has the best quality water
Rain water is generally acidic which will leach copper from copper water 
pipes and aluminium from metal pipes. The lime in the cement helps 
neutralise the water.
A study conducted by our local University on rainwater tank quality found 
the best quality water came from a colourbond gal-iron roof stored in 
cement water tanks.

Djanbung Gardens Permaculture Education Centre
home to: 
Permaculture Education
ERDA Institute Trust
Nimbin Eco-Village Project Office
Robyn Francis - permaculture designer & educator
PO Box 379, Nimbin NSW 2480 Australia
permed@nor.com.au  www.earthwise.org.au