GAMA Technical Group Webinar June 2015

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1. IER.CH 1 GAMA Technical Group Webinar/meeting 22nd June 2015 @resilienceIO 2. IER.CH 2 Agenda 3. 4. IER.CH 6 Globally 5. IER.CH 7 Mongolia 6. IER.CH 8 Mongolia 7. IER.CH 9 Dorset, China and Scotland 8. IER.CH 10 WASH Sector Preliminary Data Overview Greater Accra Metropolitan Area IIER Rembrandt Koppelaar London, June 2015 9. IER.CH 11 Spatial datasets 10. IER.CH 12 Spatial: Greater Accra district boundaries Prior 1988 1988 to 2001 2001 to 2008 2008 to 2012 2012 to present 11. IER.CH 13 Spatial: current district boundaries 12. IER.CH 14 Available spatial data to refine detail Available/who to contact?: GIS dataset Neighbourhood level boundaries? GIS dataset Enumeration areas? Slum area boundaries map? Is population and household data available for these levels? GIS map of river basins GAMA (rivers, lagoons, canals etc.) - CERSGIS? 13. IER.CH 15 Population and household datasets 14. IER.CH 16 Population data - numbers 2000 2010 Sources: Twum-Baah, K.A., Kumekpor, T.K.N. Addae-Mensah, I., Appiah, R., Tawiah, E.O., Wadieh, B., 2005. 2000 population and housing census: Greater Accra Region. Analysis of District Data and implications for Planning. Ghana Statistical Service. Sources: Awusabo-Asare et al., 2010. 2010 Population and Housing Census: National Analytical Report. Ghana Statistical Service. 409 pages The 2000 values for new districts were estimated from aggregate 2000 district values and proportionate 2010 shares Source: 15. IER.CH 17 Household data - numbers 2000 2010 Sources: Twum-Baah, K.A., Kumekpor, T.K.N. Addae-Mensah, I., Appiah, R., Tawiah, E.O., Wadieh, B., 2005. 2000 population and housing census: Greater Accra Region. Analysis of District Data and implications for Planning. Ghana Statistical Service. Sources: Awusabo-Asare et al., 2010. 2010 Population and Housing Census: National Analytical Report. Ghana Statistical Service. 409 pages Also collected: - Type of house - Households per house 16. IER.CH 18 Source Water Datasets 17. IER.CH 19 Source Water Overview Sources Source water treatment Weija + Kpong Waterworks Source water treatment Boreholes Direct Water Consumption Satchet Drinking Water Production Bottled Drinking Water Production Industrial use Commercial use Residential use Drinking water consumption Tanker- Vendor Water Distribution Non- Drinking water consumption 18. IER.CH 20 Source Water Network Infrastructure Who to establish contact for: - GWCL GIS for Map of source water piping infrastructure location/pipe types/sizes/age? - GWCL data for number of connections per district and sub-district level? - GWCL data for estimates of non-revenue water portions as technical losses / theft / accepted non-revenue water? - GWCL data/estimates for water consumption by district and sub-district level? 19. IER.CH 21 Source Water Supply Infrastructure Weija Waterworks Technology 1984 - 102,000 m3/day 2002 192,979 m3/day 2009 245,484 ,3/day Kpong Waterworks Technology 1965 205,000 m3/day 1995 220,454 m3/day 2015 413,589 m3/day 20. IER.CH 22 Source Water Supply Infrastructure AMA/Okponglo reservoir + booster station Reservoir ? m3 Booster station 35,000 m3/day Source: Heytens, G., 2013. Atsutsuare Water Treatment Plant: Environmental & Social Review Summary. Denys TEMA reservoir + booster station Reservoir 172,800 m3 Booster station 99,600 m3/day Source: Ghana Hydro Database, 2014. Greater Accra Water Supply Systems fact Sheets http://ghanahydrodata.com/ ? ? 21. IER.CH 23 Source Water Supply Infrastructure Old TEMA reservoir 11,365 m3/day Source: Ghana Hydro Database, 2014. Greater Accra Water Supply Systems fact Sheets http: //ghanahydrodata.com/ Teshie Desalination Plant Ultra-filtration + Reverse Osmosis April 2015 - 60,000 m3/day ? 22. IER.CH 24 Source Water Supply Capacity Weija dam collapse 23. IER.CH 25 Source Water Overview GWCL Collection of Revenue Water % in 2014 24. IER.CH 26 Source Water Supply Total Jump whilst no significant capacity additions? Non-matching values? Sources: GWCL cited in Table 5.2. Al-Hassan, K. Y. (2007). Water Demand Management of Domestic Water in the Accra, Tema Metropolitan Area (ATMA), Ghana. Unesco-IHE. / Figure 22. Page 105. Van Rooijen, D. J. (2011). Implications of Urban Development for Water Demand , Wastewater Generation and Reuse in Water-Stressed Cities: Case studies from South Asia and sub-Saharan Africa. Lougborough University. Figure 4.2. Page 84. Abbey, F. M. (2013). Assessing existing water demand and supply patterns and reuse options as additional sources of water in the Greater Accra Metropolitan Area (GAMA). University of Ghana. The drastic fall in water production and a sudden increment in 1995-1996 are actually to to the general face lift of the two and only major sources of water supply by then (personal communication with Mr. Ebo and Mr. Abroakwa, both are station managers at the KPONG and Weija head works respectively). Al-Hassan, K. Y. (2007). Water Demand Management of Domestic Water in the Accra, Tema Metropolitan Area (ATMA), Ghana. Unesco-IHE No other sources found which mentions expansions in 1995- 1996 or projects thereto in order of 100,000 m3/day? 25. IER.CH 27 Non-Revenue Water % GWCL available GAMA data to create a better estimate? Sources: Figure 7.1. Page 109. Nyarko, K. B. (2007). Drinking water sector in Ghana: drivers for performance. Technical University of Delft. / Ameyaw, E.E., Chan, A.P.C. 2013. First PPP Application in the Urban Water Supply Sector: Performance and Lessons from Ghana. World Building Congress 2013 / Attafi, S.W., 2014. Capacity Building Support to GWCL - The Business Case for Setting up of LICSU. [online]. Available at: www.washghana.net/ Frimpong, Y.V., 2014. GWCL Loses 47.2% water. [online]. Available at: http://www. ghanavisions. com/mobile/news/65249- gwcl-loses-47-2-water.html 26. IER.CH 28 Top-down water consumption estimate Preliminary assumptions: - Ghana wide % of Non-revenue water from total water supply - Of non-revenue water 50% is lost from technical failures (leaks) - Water from boreholes is ignored (estimated