'''The associated study presents a step by step methodology for developing sector investment plans. <br>Some critical steps include ''' (Fonseca, et al.):
* estimation of disaggregated costs based on bill of quantities,
==Key documents==
* Carlevaro, F. and Gonzalez, C., 2010. Costing improved water supply systems for low-income communities : a practical manual. [http://www.icevirtuallibrary.com/content/article/10.1680/wama.1000043 Proceedings of the ICE - Water Management], 164 (3), pp 123–134.
* Jacobsen, M. and Karup, J., 2007. [http://www.euwi.net/files/euwi/8509_tmpphpJ2Jwqv.pdf Developing financing strategies in water supply and sanitation]: information note prepared by COWI consultants and shortened by the FWG Secretariat. EUWI Finance Working Group. Brussels, Belgium : EUWI Secretariat, European Commission.
* Fonseca C., Dubé A. and Verhoeven J., 2011. [http://www.washcost.info/page/1473 Cost-based decision support tools for water and sanitation]. Working Paper 4. IRC International Water and Sanitation Centre.
* Heath T., Tibenderana P., Carter R., Danert K and Berhe E., 2009. [http://www.rural-water-supply.net/en/resources/details/361 Borehole Costing Model V2.8 BETA], Cranfield University, UNICEF, SDC, Skat, RWSN.
* Mali. Direction Nationale de l'Hydraulique -ML, 2009. [http://www.washdoc.info/docsearch/title/174885 Etude concernant l’evolution future du systeme STEFI : rapport final]. Bamako, Mali: Mali, Ministere des Mines, de l'Hydraulique et de l'Energie, Direction Nationale de l'Hydraulique.
* Mehta, M, Fugelsnes T, Virjee K., 2005. [http://www.irc.nl/docsearch/title/174392 Financing the Millennium Development Goals for Water and Sanitation: What Will it Take?] International Journal of Water Resources Development, 21(2) pp.239-52.
* Virjee, K., 2007. [http://www.washdoc.info/docsearch/title/172724 The sector wide investment and financing tool (SWIFT)]: model overview : working paper draft . Nairobi, Kenya: Water and Sanitation Program - African Region.
* Water and Sanitation Program (WSP), 2011. [http://www.wsp.org/node/162 Is Africa on Track to Meet Water Supply and Sanitation Targets?]
* Wiemers A., 2005. [http://content.undp.org/go/cms-service/stream/asset/;jsessionid=aIHA9xSEGS69?asset_id=2548671 Water and Sanitation Needs Assessment Model]. User guide. MDG Needs.
====Assessment Tools====