The Adoption Of Roof Catchment Rainwater Harvesting And Major Water Sources In Nairobi County, Kenya

Christine Ombuna, Mwetu Kennedy, Benson Mochoge
2018 Zenodo  
Nairobi County is faced with acute water scarcity and streets are often flooded during heavy downpour. The aims of this research were to assess the adoption of roof catchment rainwater harvesting and major water sources in Nairobi County. Samples were picked from Kabete Dagoretti, Wilson, Moi Airbase and J.K.I.A meteorological weather stations. Assessment was done in Maisonette and multi- story residential buildings, institutions and industries followed by a descriptive analysis. The outcome of
more » ... sis. The outcome of the study revealed that typical sources of water were City council piped water, borehole and roof catchment rainwater harvesting. Most buildings solely depended on City Council piped water; industries 76%, institutions 48%, maisonettes 56% and multi-story buildings 50%. There was no building depending solely on roof catchment rainwater harvesting. The ones who harvested rainwater did it as supplement to City Council piped water and/or boreholes. Institutions are leading in rainwater harvesting 44% followed by maisonettes 20%, multi-story buildings 6% and industries have least adopted rainwater harvesting 4%. The overall adoption of roof catchment rainwater harvesting is 16%. Most residents, 79.4% were not harvesting rainwater because rainwater harvesting systems were not included in the initial planning or architectural design of buildings. But 84.6% felt that roof catchment rainwater harvesting should be practiced by every building. Roof catchment rainwater harvesting can solve problems of water scarcity in Nairobi County. Every building should harvest rainwater and store it in appropriate storage capacity that depends on water demand in the building and rainfall supply.
doi:10.5281/zenodo.1465981 fatcat:wgvytwuy7rhutkwrussg2w5ydu