1. R. Hochstrat and T. Wintgens, eds., AQUAREC, Report on Milestone M3.I, Draft of wastewater reuse potential estimation, Interim report, 2003.
2. Organisation for Economic Co-operation and Development, Water — Performance and challenges in the OECD countries, Environmental Performance Reviews; 2003.
3. EU, Council Directive establishing a framework for community action in the field of water policy. 2000/60/EC of October 23; 2000, OJ L 327 of December 22, 2000.
4. EU, Council Directive concerning urban wastewater treatment. 91/271/EC of May 21, 1991, OJ L135/40 of May 30, 1991.
5. Sustanable water use — Part 1: Sectoral use of water;European Environmental Agency,1999