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Published byChristine Wiggins Modified over 9 years ago
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Ward City River & Environs Peri- domestic (street, school, work- place) Home The urban environment World Bank 2004
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(street,school, workplace) Peri- domestic Street Sewers Home House Connections An “engineer’s” view Central Treatment Works City Collectors Ward World Bank 2004
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Ward Sewer Mains House Connection Home Peri- domestic Street Sewer City Interceptor/ Collector River & Environs Treatment Plant/Outfall World Bank 2004 The “Household Point of View”
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Some questions that arise Wastewater treatment standards Objectives of standards: health, environment? What standards can we afford? Uniform treatment standards or vary with receiving water and its use? Reuse of wastewater when there is water scarcity (industrial/irrigation) Sanitation and public health How do we set priorities on sewerage investment? Which towns? Which streets? Where is onsite sanitation (infiltration) acceptable? World Bank 2004
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Focus on the household… Where most disease transmission occurs Where families are most exposed and most vulnerable How to target sanitation investments where they will have the biggest impact?
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