The project involves investigation of the pollution profile of Nairobi Dam and Reservoir. Investigation was
carried out by determining the physical, chemical and bacteriological properties of the water flowing into
and out of the reservoir. The sample stations were thus selected at the mouths of the inlets flowing into the
reservoir and at the outlet of the reservoir. The samples were then analyzed based on the standard analysis
methods in the laboratory.
The reservoir is situated in a quite unsafe area so a reconnaissance was conducted before the actual
fieldwork. I was lucky enough to find a resident guide thanks to the management of one Undugu Group
that run a waste management project at the shores of the reservoir. From the actual field study it was
realized that the dam was extremely polluted and released an awful odour. Most of the reservoir was either
filled up or covered in water hyacinth. The laboratory results didn’t make things any better either, the water
was found to contain very high concentrations of pollutants. After the research, some recommendations
were made towards restoration of the dam to its former glory. They included: -

Strict implementation of wastewater regulations to the residents of the area surrounding the
 Slum upgrading of the Kibera Informal Settlement and installation of proper sewerage system.

Regulation of farming activities in Ngong.
 Banning of settlement too close to the reservoir and its inlets.
 Improving on garbage collection and disposal in Kibera slums.

Dredging the reservoir to restore it’s initial volume.

Structural repair of the dam.
 Removal of water hyacinth from the reservoir.


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