After the preparation of the City Sanitation Plan (CSP) of Kochi, India, GIZ has initiated this intervention among others. The recommendation of the CSP was to make an inventory of waste water discharge from the households and to implement intermediate measure such as household sanitation systems.
GIZ (2012): Implementation of Household Sanitation System in Slum Areas at Kochi. Eschborn: Gesellschaft fuer Internationale Zusammenarbeit (GIZ)