It is a comparison of sodium content, pH and phosphorous levels etc (in average loads in both top and front loading washing machines) using wide range of washing detergents.

So it is a simple matter of identifying the washing detergent with the least amount of sodium and phosphorous etc, from the graphs.

http://www.lanfaxlabs.com.au/

Follow the 'laundry' link.

Do you use grey water on your garden?

So I feel confident that washing water sprayed on to the foliage of my native plants will not effect them. But time will tell.

Will post another message if a notice any effects on the plants.