The results of an independent evaluation of 60 case studies of water and sanitation infrastructure projects in India, Mexico, and South Africa, most of them implemented since 2000, demonstrate an ongoing problem of failing infrastructure even in economically advanced developing countries. This paper presents a meta-analysis of those project case study results and analyses whether the design of existing policies or other factors contribute to failures. It concludes that the observed failures are due to well-known reasons and recommends how the implementation of the Dublin-Rio Principles can be improved. (They were introduced twenty years ago to avoid such failures by means of more sustainable planning.).

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Non-networked sanitation technologies use no sewer, water or electricity lines. Based on a review of 45 commercially distributed technologies, 12 (representing three concepts) were selected for a detailed audit. They were located in six countries of Africa and Asia. The safety of users was generally assured and the costs per use were not excessive, whereas costs were fully transparent for only one technology surveyed. A main drawback was insufficient quality of the byproducts from on-site treatment, making recycling in agriculture a hygienic and environmental risk. Further, no technology was sufficiently mature (requiring e.g. to shift wastes by hand). In order to promote further development and give producers of mature products a competitive advantage, the paper proposes a certification of technologies to confirm the fulfillment of basic requirements to make them attractive for future users.