gpa_east_africa_case.. - GRID Africa GeoPortal - UNEP

• Disentery• Cholera• Typhoid5,200/yr.1,440/yr., deaths 77/yr.400/yr., deaths 5/yrNote: Author's summary based on information in the National Report1. Summary of Existing Information of Wastewater Sources and Pollution ImpactsIt is important at the outset to focus on the key links between wastewater sources, theperceived impacts and the resources affected. The table below is intended to serve as a anoutline of the pollution linkages based on the information presently available and a frameworkfor identifying gaps to guide future data collection and refinement.Table 6: Outline of Sources of Pollution and Resources AffectedActivities and Main Source Areas Impacts on Resources LocationsDomestic wastewater1.Water quality and living Msimbazi creek and bay• Unplanned settlements accountingfor 85% of DSM population notserved by any infrastructureconditions in thesettlementsOyster bayUnplanned Settlements(Manzese, Vingunguni, etc.)Industrial effluents and wastes• Nyerere road• Micochemi industrial area• Changombe indutrial area• Morogoro road area• Mandela industrial area• Mbezi / Ali Hassan Mwinyi road• Kamuma dump site (now disused)Agricultural wastes• Vigunguti dump siteLand-based oil spills• Kigamboni and DSM harbourMining near the coast• Mbagala, Chamzi, Pande,• Twangomna, Majohe, Makongo,• Kitunda, Bunju2. Contamination of creekand river systems fromthe disposal or overflowof sewage fromsettlements3. Degradation of thecoastal and marineenvironment fromsewage, river runoff andsediment ultimatelyreaching the coastal andmarine ecosystem4. Land degradationerosionNote: Author's summary based on information in the National Report2. Proposed Wastewater ActionsMsimbazi River,Mzinga River / Kawe beachOcean, Africa beach hotel areaCreeks and rivers (Mpiji,Msimbazi, Kizanga and Mzinga)Harbour areaMbagala, Chamzi, Pande,Twangomna, Majohe, Makongo,Kitunda, BunjuThe National Report provides a list of several proposed actions. The cost information ishowever patchy and inadequate. Information on projects does clearly distinguish thosealready completed from those either presently under construction or planned for future 5-10year period. Also, it is not clear which of the listed projects are regional, for the whole DSMregion, and which are for the city of DSM.The projects listed are cited below and include on-going initiatives/programmes and proposedprojects:Projects1. Suitability of ground water DSM - Guidelines for the monitoring of wells and wetlandsagainst contamination. (1999–2000). UCLAS Department of Environmental Engineering DSM.(Cost $10,000)2. Design Study for Domestic Wastewater Treatment Infrastructure – UASB project (1993 –2001) UCLAS Department of Environmental Engineering DSM. (Cost not available)3. Nation-wide Inventory on Obsolete Pesticides and Veterinary wastes - Chemical WasteManagement Project, NEMC Project (1997–1998), financed by the Royal NetherlandsEmbassy). (Cost not available).Final Draft Report – Cost Benefit Case StudiesGPA Strategic Action Plan on Sewage, October, 200031