Authors: E O Fagbote E O Olanipekun H S Uyi
Publish Date: 2013/01/10
Volume: 11, Issue: 1, Pages: 127-138
Abstract
Ground water of the farm settlements in the bitumen deposit area of Western Nigeria were tested for pH conductivity turbidity total dissolved solid sulphate phosphate nitrogen nitrate chloride alkalinity total hardness calcium magnesium sodium potassium and total coliform in the dry season March and rainy season August of years 2008 and 2009 using atomic absorption spectrometer and standard analytical methods Conductivity pH turbidity phosphate ions and total coliform values obtained in some of the wells were out of the recommended range for drinking water Water quality index analysis was carried out using information entropy method Water quality index of the wells when compared with the permissible limits of international standards ranked the bore hole as ‘excellent’ in the dry season of year 2009 and just ‘good’ in the rainy season of the same year Ground water sampling stations were ranked extremely poor at least once out of the four seasons considered Water quality index ranking also showed that the quality of the wells declined over the years The correlation coefficient matrix p 005 of water quality index and the parameters showed significant relationships between water quality index and total coliform 099 total dissolved solids and conductivity 096 hardness and Ca2+ 068 hardness and Mg2+ 075 Water quality index also showed moderate significant relationship with total dissolved solid conductivity and N–NO3 − High concentration of total coliform in most of the shallow wells in the environment due to bitumen deposit renders them unfit for human consumption unless properly treated
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