and Scheider, W.: 1988, Water Analysis – A practical guide to physicochemical, chemical and microbiological water examination and quality assurance, Springer Verlag, pp. The correlation coefficientbetween quality parameter pairs of river water and groundwatersamples are determined and the significance of these parametersin both types of water sources are discussed.ĪPHA: 1989, Standard methods for Examination of water and wastewater (17th Edition) prepared and published jointly by: American Public Health Association (APHA) American Water Works Association (AWWA), and Water Pollution Control Federation (WPCF), New York.ĮPA: 1989, Is your drinking water safe? Environmental Protection Agency (WH – 550), 570/9, 89– 105.Įuropean Community (EC): 1980, Official Gazette No. There is nosignificant difference (P < 0.05) between the meanconcentrations of other inorganic nutrients in the high and lowpollution water source types. Thehigh pollution river water source showed higher levels ofphosphate, nitrate and ammonium ions (P < 0.05). The highervalues of certain parameters with respect to the acceptablestandard limits for drinking water indicate the pollution inboth groundwater and river water samples of the study area, and make the waters unsuitable for various applications. The pH,temperature, electrical conductivity (EC), total dissolvedsolids (TDS), total hardness (TH) and total carbon (IV) oxide(TCO 2) have also been determined to asses the chemicalstatus and pollution levels of these water sources. The present investigation provides data of some ions, namely Na +, Ca 2+, NH 4 +,Cl -, NO 3 -,CN - and PO 4 3- on water samples of river Osun,selected rivers in the region and groundwaters.
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