Water kiosks are a low-cost technology to scale up the water supply to the poor. The approach taken typically includes the decentralisation and commercialisation of water supply and sanitation (WSS) services, taking into account the needs of the poor in particular. This report gives an introduction to the water kiosk concept, its impact and challenges, and an example of a best practice implementation: the case of Zambia.
GTZ (2009): Case Study: Water Kiosks. How the combination of low-cost technology, pro-poor financing and regulation leads to the scaling up of water supply service provision to the poor. Eschborn: Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH. [Accessed: 22.03.2019] PDFLibrary
Here you find more material about the private sector participation of small-scale water providers, particularly in Africa.

This paper investigates the potential for fog harvesting of the West Coast of South Africa.
OLIVER, J. (2002): Fog-water harvesting along the West Coast of South Africa: A feasibility study. In: Water SA: Volume 28 , 4. URL [Accessed: 21.03.2019]
This book provides a general introduction to a wide range of technologies. Among the topics covered are: planning and management of small water supplies, community water supplies in Central and Eastern European countries, water quality and quantity, integrated water resources management, artificial recharge, rainwater harvesting, spring water tapping, groundwater withdrawal, water lifting, surface water intake, water treatment, aeration, coagulation and flocculation, sedimentation, multi-stage filtration, desalination technology, disinfection, household level water treatment, technologies for arsenic and iron removal from ground water, and emergency and disaster water supply. Chapter 6: Artificial Recharge
SMET, J. ; WIJK, C. van (2002): Small Community Water Supplies: Technology, People and Partnership: Artificial Recharge - Chapter 6. The Hague: International Water and Sanitation Centre (IRC) URL [Accessed: 21.03.2019]
This document provides guidance on artificial recharge techniques and designs and the planning and monitoring of artificial recharge projects.
MINISTRY OF WATER RESOURCES (2000): Guide on Artificial Recharge to Groundwater. New Delhi: Central Ground Water Board URL [Accessed: 21.03.2019]
This paper provides a scientific background on fog, including the definition of fog, the types of fog, and the relevance of fog in research.
EUGSTER, W. (2008): Fog Research. In: Die Erde : Volume 139 , 1-2. URL [Accessed: 21.03.2019]
This brochure gives an overview on different low-cost aquifer recharge solutions based on the results from a 10-year pilot project in Uttar Pradesh. It indicates a practical and low-cost way to conserve and rejuvenate falling groundwater reserves.
IWMI (2002): Innovations in Groundwater Recharge. Water Policy Briefing. IWMI-TATA Water Policy Program. Vallabh Vidyanagar: International Water Management Institute URL [Accessed: 21.03.2019]This article is about fog harvesting projects in South Africa.