Nyeri Municipality is located approximately 150km north of Nairobi. The city of Nyeri is the District and Provincial Headquarters and consequently an administrative centre. It covers an area of 200km². Due to insufficient and unreliable infrastructure as well as failing water supply service delivery the health of the approx. 130.000 inhabitants of Nyeri was increasingly exposed to great risks. Growing ratios of diseases such as typhoid fever, cholera and diarrhea clearly indicated this worsening situation.