The study area located in Southern Nation and Nationality People Region (SNNPR) andrnencompass Sidama & Gedeo Zones that are among all the coffee growing region of Ethiopia,rnbounded between 37Â° 54'N to 39Â°8 N latitude and 5Â° 52'E to 7Â° 13'E longitude in which mostrnpart of it situated in the rift valley lakes basin and the remaining part in Genale Dawa basin .rnThe study area has different land form characteristics varied from High Mountain up to lowrnlands: its altitude varies from the highest peak (3000m) up to lowlands (1100 m)rnHigh water usage, channeling residual water and the pulp together, in efficiency of therntraditional waste disposal pits, absence of monitoring and lack of sustainable wet coffeernproduction strategy and policy are some of the factors that aggravate the impact of thernprocessing plants on the poll ution of water bodies were di scussed in problem identificationrnand analysis.rnMeasured values of physical parameters such as turbidity and pH are out of the range ofrnWHO guideline values and standards. From the Physical observation itself during coffeernprocessing periods rivers and streams have objectionable color odor and taste so that thernwaters have evil or pungent small and test.rnTDS and EC values of rivers and streams in particular spring and boreholes in general showsrnthat the water is fresh.rnBased on the measured value of the total hardness in terms of CaC03 the surface andrngroundwaters of the study area classified as moderately hard.rnThe limited water chemical analysis fi'om previous representative sources indicated that thernriver and ground waters are Na HC03 type of water, the dominant cation being Na and anionrnbicarbonate.rnThe highest value BOD and COD in river water is 8750 and 3120mg/1 that have a potentialrnfor decreasing greatly the level of dissolved oxygen in the rivers that reduces the diversity of aquatic life. The maximum COD value of the effiuent obtained from this analysisrn(24,600mg/l) is 98 times higher than the EPA standard fro effiuent discharges to inlandrnwaters. The highest BOD value was 39 times higher than the EPA standard.rnThe bad, evil and pungent smell that can be sensed along the river courses during coffeernprocessing periods were explained by the concentration of Ammonia (NH3) that was rangedrnfrom 1.48to 90mg/1 and was much higher than the recommended limits.rnThe highest nitrite (N02-) concentration was 60mg/1 in Melkadimtu Rivers. From the totalrnanalyzed samples about 50% of them had their values were nearly I mg/I, which are far higherrnthan levels in unpolluted waters (0.03mg/I). Rural communities that use river water as theirrnsource of water supply may expose to carcinogenic effect due to this level of nitrite.rnCoffee pulp, which is one of the bypro ducts of coffee processing, have some economicalrnapplications that may become evident as their use is increased. Compost and fertilization,rnPulp beverage, animal feed, fuel wood substitutes are some of the suggested measures to berntaken to mitigate the effects.