The Review presents two selected key papers, namely: the specifications and indicators of wastewater treatment for use in irrigation; and the environmental impact assessment arising from the liberalization of trade on small and medium enterprises. The latter paper deals with the case of the textile and garment industries in Morocco and in the countries of the southern Mediterranean. The Review also provides a briefing on the main ESCWA activities during 2004, including studies, reports, meetings, projects and advisory services related to the sustainable management of water and energy resources, environment and related sectoral developments. Additionally, it includes a statistical profile of selected sectors in the water and energy fields.