Lake Ziway is one of the rift valley fresh water lakes. The lake water is an important water source for the community.There is a lot of deliberation about floriculture industries located at the shore discharging untreated effluent directly in to the lake; as a result excessive fertilizer and pesticide residue from the farm is deteriorating the water quality as well as the aquatic life. Therefore, this study was proposed with the objective of assessing the impact of floriculture industries on the water quality. To do this, five sites were chosen on the lake near the outlet of flower farms. A...