Hailu, Birhanu (2017) Physicochemical and Microbial Quality of Drinking Water from Source to Household Taps: The Case of Legedadi Reservoir. Masters thesis, Addis Ababa University.
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Abstract
In Ethiopia, only 52% and 28% of the population have access to safe water and sanitation coverage, respectively; as a result, 60-80% of the population suffers from waterborne and waterrelated diseases. The purpose of this study was to evaluate the physico chemical and microbial quality of drinking water supplied to Addis Ababa from Legedadi reservoir (source), treatment and distribution systems(household taps) by examining water quality parameters. A total of seven sampling sites were chosen along the water course. To characterize the water quality, was examined using 20 water quality parameters:- water temperature, electrical conductivity, turbidity, pH, lead (Pb), total suspended solids, total dissolved solids, copper (Cu), total nitrogen, total phosphorus, free chloride, nitrate-nitrogen, sulfide(S-2), sulfate(SO4-2), dissolved oxygen, biological oxygen demand, chemical oxygen demand, total coli form, fecal coli form and E-coli. By using, Gravimetric, Volumetric, flame emission spectrophotometer, AAS, electrometric (pH value selective electrode) and nephelo metric (turbidity) analyses methods. The output result of water quality parameters at dry and wet seasons at the source, treatment site and household taps concentration of total coli-form, E-coli, turbidity, COD, T-N, Pb, were all are above the drinking water standard limit. All parameters showed increment in concentration from treatment site to distribution system both in wet and dry season. Therefore, it can be concluded that along distribution system, the drinking water is prone to contamination and the water quality decline along distribution system. In terms of microbial result, the drinking water showed fecal source of contamination which makes it not suitable for drinking water purpose. In addition in Legedadi reservoir, high level of nutrient and chemical load were recorded; therefore it is recommended that human and livestock interference to the reservoir should be restricted and upper catchment agriculture activity should be controlled finally waste disposal and wastes management system of distribution lines in the city should be properly constructed and well protected from pollution.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | parameters, water sanitation, Drinking water quality, WHO standard, household tap, distribution system, Legedadi reservoir |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences G Geography. Anthropology. Recreation > GN Anthropology Q Science > QR Microbiology R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 20 Sep 2018 14:27 |
| Last Modified: | 20 Sep 2018 14:27 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/5453 |
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