Diversion of greywater via a hose directly into the garden can be problematic in some areas. How do we design a greywater dispersal mound to minimise environmental and health risks and maximise water and nutrient reuse? How do we prevent root blockage of the pipe? How do we prevent spray drift and odour problems, mosquito breeding, water logging of soil. How do we set up composting of contaminants, growth of beneficial plants and establishment of an ecosystem for processing the greywater? How large would the mound have to be, how high, how many spiral swales would be utilised, how deep, how wide and how long would the spirals need to be and on what grade? What sort of plants should be used? Plants with space between stems that will not block up? Swampy plants? Evergreen plants, plants that can be harvested for mulch? It is assumed the greywater is pumped up through a pipe into the centre of the mound but rather than spurting out over the surface like a fountain, there probably needs to be a cover over the end of the pipe. Should it be a larger pipe with the end blocked off that just rises up when the pump starts to release the water through the accumulated debris below? Should it be a compost bin with a sand or rock base that slowly lets out the greywater into surrounding spirals for their long path down the mound? What are the maintenance issues? How often would the spirals need to be reformed and replanted? Will the mound grow as more organic material deposits itself on the mound? will the earthworms thrive in the walls of the swales? Does the mound have to be round or could it be square or hexagonal? Many septic tank systems need to be almost as large in area as the house floor area of the house they are serving. I am sure that a permaculture system could be designed that is far more efficent than that and utlise the water all through the process. Many greywater diversion systems need filters but would this be necessary on this type of system? Could it be designed that clogging just builds up and rebalances the mound distribution system? The problem sites are on very flat clay flood plain sites with very poor drainage - any suggestions?