Evaluating the Effects of Pollutants on Groundwater Quality in Okrika Nigeria


Authors : Ogolo I.; Abam T.K.S; Ngah, S.A; Ujile, A. A

Volume/Issue : Volume 6 - 2021, Issue 8 - August

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/37WdrdT

The environmental quality of groundwater is very important to determine its suitability for drinking and agricultural purposes. The current status of groundwater in Okrika Local Government Area, Rivers State, Nigeria and host to the Port Harcourt Refinery Company was evaluated. A total of 20 samples from boreholes, were taken from Okrika island, Ogoloma, OganAma, Kalio, George, Okari, Ekerekana, Abam, Orupabo and Isaka Communities. The water samples were collected during the dry and wet seasons (February, July and November, 2020) and analyzed using standard methods. The samples were analyzed for the following parameters: pH, Temperature (T), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, Turbidity, Chlorine, Bromine, Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Nitrate, Phosphate, Cadmium (Cd) Lead (Pb) and Zinc(Zn). Results obtained showed significant deviation of some components from WHO standards. Water samples showed that (80%) had pH concentration lower than the WHO and NSDWQ Directive limit of 6.5 - 8.5 for potable water; DO and BOD values were below and above recommended limits of 6mgIL and 0.002 mg/L respectively. Four samples exceeded the WHO limit of 0.5mgIL phosphate in drinking water. The results of Water Quality Index (WQI) rating in study area in the two seasons are above the standard rate which is an indication that the water is unfit for drinking

Keywords : Groundwater, Water Quality, Pollutants Public Health, Okrika.

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