==Key documents==
• * Fonseca, C., Brikké, F. and Kouassi Komlan, E., 2005. Planning for Sustainable Cost Recovery in Community-Based Water Supply Services. Delft: IRC International Water and Sanitation Centre. * Fonseca C., Smits S., Nyarko K., Naafs A. and Franceys R., 2013. [http://www.washcost.info/page/2713 Financing capital maintenance of rural water supply systems: current practices and future options]. (Working Paper 9). The Hague, The Netherlands: IRC International Water and Sanitation Centre. This 40-page working paper provides case study evidence on current practices around funding capital maintenance, including the levels of funding provided and the resulting impact on services. * Franceys, R. and Pezon, C., 2010. [http://www.washcost.info/page/866 Services are forever: the importance of capital maintenance (CapManEx) in ensuring sustainable WASH services]. (WASHCost briefing note; no. 1b). The Hague, The Netherlands: IRC International Water and Sanitation Centre.
This 8-page briefing note introduces the concept of capital maintenance expenditure.
• * IRC, 2012. [http://www.washcost.info/page/2386 Providing a basic level of water and sanitation services that last: cost benchmarks]. (WASHCost infosheet; 1). The Hague, The Netherlands: IRC International Water and Sanitation Centre.
Information sheet provides an overview of the minimum benchmarks for costing sustainable basic services in developing countries. The benchmarks have been derived from the WASHCost project dataset and the best available cost data from other organisations all over the world. The benchmarks are useful for planning, assessing sustainability from a cost perspective and for monitoring value for money.