Hi Peter, As others have ...
Published by Shane Blake, Supervisor at Veolia
Hi Peter,
As others have eluded, this is a complicated question. Legislation aside, testing is your primary means of determining potential reuse. Wastewater treatement varies heavily on the design of the plant, and required treatment quality, but for reuse, you must consider nutrient content, bacteriologocal removal, heavy metal content and other toxins, hormones and polishing of the effluent to accomplish safe reuse.
All the best.