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            Supporting material:

            Institutional developments, standards and river quality: A UK history and some lessons for
            industrialising countries (Water Science and Technology, 1996) 

  Urban wastewater technologies and the implementation of discharge standards in developing
  countries (Urban Water, 2002)

            European Urban Waste Water Treatment Directive: 
            Consolidated text of Directive (i.e., including amendments, etc.)
            Table of effluent quality requirements for waste stabilization ponds

            Discharge to sea:  
            The Aruba Protocol (‘concerning pollution from land-based sources and activities to the
            convention for the protection and development of the marine environment of the wider Caribbean
            region’, Caribbean Environment Programme/UNEP, 1999)
           ►The Aruba Protocol, and other similar regional agreements drawn up by UNEP’s    
           Regional Seas Programme, have their legal basis in the United Nations Convention on the
           Law of the Sea − see Article 207: Pollution from land-based sources (pdf page 98 of
           the Convention)

            Wastewater use:
            The 2006 WHO guidelines for wastewater use in agriculture are available here 
            and for wastewater use in aquaculture here.