Hi, the following documents ... Published March 11, 2018 02:39 by Iouri Vaisman, IVS Pty Ltd - Director Hi, the following documents might be of use: http://www.newwaterways.org.au/downloads/Resources%20-%20Policy%20and%20Guidelines/Water%20reuse%20and%20recycling/Final_Waterlines_full_version.pdfhttps://www.sydneywater.com.au/web/groups/publicwebcontent/documents/document/zgrf/mdu2/~edisp/dd_056073.pdf