A Sanitation (or Shit) Flow diagram presents a clear picture of how excreta flows are managed within the city. The diagram clearly depicts how excreta flows from user interface to the final disposal. It has the following stages:
Containment
Ø In the periphery of the city, mostly low to middleincome households are dependent on the lined pit with semipermeable walls and an open bottom, without an outlet. Prefabricated concrete rings are installed to create a pit
Ø While in the centre of the city, the middle to high-income group households have lined tanks with impermeable walls and open bottom with an outlet connected to open drains or septic tanks connected to open drains.
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