The environmental impact generated from coffee processing effluent was assessed bycomparing reference sites with downstream locations. The physico-chemicalparameters of coffee effluent on average consists of very high amount of BOD(2200mg/l), NO3 (26.4mg/l), low pH (4.3), and zero DO values. Thus, BOD values ashigh as 1900mg/l and 1700mg/l were found at the downstream sites of Bore and Fiterivers, respectively. The cluster analysis was effective in clustering the downstreamsites of Fite and Bore rivers. Based on the principal component analysis, fresh waterloving species of Heptagenidae and Hydropsycidae had higher weighted average foroxygen while pollution tolerant species of Chironomidae and Oligocheata had higherweighted average for BOD. The habitat score of the study sites was in the range of29% (very poor) up to 84% (excellent). In general, the integrity of most ofdownstream sites was impacted by the coffee processing activity in the area.
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