1. Introduction; 2. Greywater re-use overseas; 2.1 The United States of America; 2.2 Japan; 3. The greywater source; 3.1 General; 3.2 Greywater source volumes; 3.3 The kitchen; 3.4 The bathroom; 3.5 The laundry; 3.6 Spa and swimming pool backwash water; 3.7 Rainwater; 3.8 Water softeners; 4. Microbial and chemical composition of greywater; 4.1 General; 4.2 Microbial quality; 4.3 chemical and physical quality; 5. Health and environmental concerns with re-use; 5.1 General; 5.2 Health risks from pathogenic micro organisms found in greywater; 5.3 Disease transmission through greywater re-use; 5.4 Disease transmission by mosquitos and vermin; 5.5 Disinfection; 5.6 The reliability of owner maintained systems; 5.7 Risks of application to multiple users; 5.8 Health risks to the ower during maintenance
5.9 Inheriting a greywater system; 5.10 Cross connection with potable water supply; 5.11 The effects of flow reduction on the sanitary sewer system; 5.12 Health risks associated with storage of greywater; 5.13 Concerns with application to lawn and garden watering; 5.14 Concerns with application to toilet and urinal flushing; 6. Methods of greywater re-use; 6.1 General; 6.2 Untreated greywater versus treatment of greywater; 6.3 Classification of domestic greywater re-use systems; 6.4 Greywater potential demand; 7. Re-use of greywater for ornamental garden and lawn watering; 7.1 General; 7.2 The benefits of greywater as a plant fertiliser; 7.3 The microbial active zone in soils; 7.4 Application to the plant room zone; 7.5 Good watering practice; 7.6 Sub-surface drip irrigation; 7.7 Sub-surface leach fields; 7.8 Surface disposal; 8. Re-use of greywater for toilet and urinal flushing; 8.1 General
8.2 Hand basin toilets; 8.3 Toilet and urinal flushing; 9. General design considerations; 9.1 General; 9.2 Cross connection prevention; 9.3 Coarse screens; 9.4 Filters; 9.5 Grease traps; 9.6 accidental ingestion prevention; 9.7 Suitability of site; 10. Design considerations for surge and collection tanks; 10.1 General; 10.2 Surge tanks; 10.3 Storage tanks; 10.4 Frequency of desludging; 10.5 Pumped systems; 10.6 Diversion to sewer; 11. Design considerations for lawn and ornamental garden watering; 12. Design considerations for toilet flushing; 13. Design considerations for hand basin toilets; 14. Benefits; 14.1 General; 14.2 Greywater source and demand volumes; 14.3 Potable water savings; 14.4 Savings from reduced sewage flows; 14.5 Cost benefits; 15. Customer acceptance; 15.1 The owner; 15.2 The neighbour; 16. Application to Australia; 16.1 Administration; 16.2 Legal aspects; 17. Conclusions; 18. Recommendations
