Assessment of the Water Quality Parameters of Tagwai Reservoir, Nigeria

Assessment of some of the physico-chemical parameters of Tagwai Reservoir, Minna, Niger State, Nigeria was carried out for the period of four months (January, 2018 to April, 2018). Four sampling stations were located on the reservoir, which included Kwatan Bello, Kwata Birgi, Hanyin Danladi, and Kwatan Raga. Water samples were collected twice in a month. Total of thirty two samples were collected and analyzed. Water temperature, pH, Transparency, Total hardness, Total alkalinity, Electrical conductivity, Biochemical oxygen demand, Dissolved oxygen, Nitrate-nitrogen, phosphatephosphorus, and Total dissolved solid were assessed. The results indicated that apart from Total Dissolved Solid, there was significantly different (P<0.01) at the sampling stations, Transparency, Temperature, pH, Dissolved Oxygen, Electrical Conductivity, Biochemical Oxygen Demand and Phosphate-Phosphorus were insignificant throughout the study. The value of Total Alkalinity, Total Hardness, Electrical Conductivity, and Nitrate-Nitrogen were insignificantly different (P>0.01) from each other. Only Total Dissolved Solid showed a significant difference (P<0.01) in the sampling stations throughout the study period. This result showed that most of the parameters of the reservoir fall within the recommended range of international standard of drinking water, with the exception of transparency and water hardness.