Bahati Water and Wastewater

From ESWStanford

Design Objectives

• Provide safe, potable water to school occupants
• Encourage conservation of water on the site
• Utilize local water resources
• Sanitation
• Minimize run-off and contaminant transport

Design Components

Documents about Water-Harvesting Technologies, Sanitation and Water Mapping in Tanzania

• Water Aid

Various systems can be explored and implemented

• Aqua Alternatives

Drinking water

• Rainwater harvesting system using an external storage tank
  • Design from Montana University
  • Info from Global Development Resource Center
  • Sourcebook of Harvested Rainwater
  • Water Purification

Sewage

• Composting toilets
  • Specific info on 3 types of composting toilets in the African context

Irrigation

• Rainwater harvesting for agricultural production
  • Specific case in Dodoma, Tanzania

Water recycling

• Greywater can be used for irrigation and/or flushing toilets
  • Information on Brac Systems' greywater recycling units

Need to Know

• What is the topography of the area?
• Is there a stream (or some other body of water) on site?
• What are the general soil characteristics?
• What are the other possible sources of water? For instance, is there a municipal source?
• What will the roof be made of?