Physicochemical Analysis of Ogun River (Water Samples) Within Two Locations (Akin-Olugbade and Lafenwa) In Abeokuta, Ogun State, Nigeria

Physicochemical analysis were carried out on water samples from Ogun river collected from Lafenwa (a densely populated area) and Akin-Olugbade (a sparsely populated area) in Abeokuta Ogun state, Nigeria.The results obtained showed that parameters like Alkalinity, pH, acidity, Chloride, Magnesium and Calcium were in the normal range and Chromium, Lead, Nickel, Zinc and Cadmium contents were below detection limit.Parameters such as nitrite, total solid, total suspended solid and total dissolved solid, Manganese, Sodium, Potassium, Iron and Copper were found to be out of desirable levels.The turbidity values ranges between 67.35 and 76.81.Total solid, total suspended solid and total dissolved solid ranged 884.00 -896.00,446.00 -448.09;438.00 -448.00 mg/l respectively.The Alkalinity ranges from 42.90 mg/l (at Lafenwa) to 43.60 mg/l (at Akin-Olugbade).The acidity values are between 4.60mg/l and 3.60 mg/l.The Chloride was in samples as 8.98mg/l(at Akin-Olugbade) and 9.86 (at Lafenwa) Samples from Akin-Olugbade have the least value of (36.10 mg/l) for total hardness while samples from Lafenwa had the highest value (38.10mg/l), pH values ranges between 7.60 and 7.72.The Nitrite contents observed for all samples are above the standards of SON, NAFDAC and WHO, samples from Akin-Olugbade has a mean value of 0. 65mg/l and Lafenwa 0.69mg/l, Calcium content is present in all the samples, 22.10mg/l for Akin-Olugbade and 33.10 for Lafenwa.Magnesium content is 14.10mg/l for Akin-Olugbade and 5.10mg/l for Lafenwa, Manganese, Sodium, Potassium, Iron and Copper contents observed for all samples were 289 ±27.60 -466 ± 100, 74600 ± 624 -77400 ±414 , 31300 ± 1.41 -33200 ±1150, 13800 ± 185 -16100 ±618, 61 ± 7.07 -176 ±23.30respectively.The observations indicate a better quality for the river water, yet unsafe for some human activities except them are properly treated and screened.