E. C. Onyenechere, P. O. Chukwukere


This study assesses the water quality of Ogochie River in Ngor Okpala L.G.A., Imo State in order to ascertain any seasonal variation. Particularly, it investigated the following physico-chemical parameters of the river water namely pH, Conductivity, Total Dissolved Solids (TDS), Zinc (Zn), Copper (Cu), Calcium (Ca), Magnesium (Mg), Iron (Fe), Ammonia (NH4),  Chloride (Cl), Total Hardness, Biological Oxygen Demand (BOD) and Dissolved Oxygen (DO). These were determined from water samples collected using the composite method at four locations (points) along the river, in the dry season and rainy season using recommended standard. The data obtained were further analyzed using Post hoc statistical test. The result showed that some of the values of the sample parameters were above or below the WHO standards. The p-value for locations (points) 1 to 4 against WHO standards are 0.043, 0.038, 0.040 and 0.034 respectively for the dry season; while the p-value for locations (points) 1 to 4 against WHO standards for the rainy season are 0.046, 0.049, 0.037 and 0.033 respectively. This result showed that there are significant variations in the water quality at different sample locations (points) and at different seasons. The water is not considered safe for drinking either in the rainy season or dry season. It is therefore recommended that the river water be treated locally by boiling and filtering before consumption.


Water quality, Ogochie River, Imo State, Season, Variation, Physico-chemical

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