Evaluation of Water Quality with World Health Organization and Nigeria Industrial Standards Using Geographic Information System

This research determined the physico-chemical parameters of hand dug wells in Eruwa, South-western Nigeria in relation to the pollution, potability of groundwater by comparing the chemical and physical quality with World Health Organization and Nigeria Standard for Drinking Water Quality permissible limits. Twenty hand dug well were analyzed for their physico-chemical parameter. The physico-chemical investigation includes turbidity, temperature, pH, colour, electrical conductivity, calcium, fluoride, phosphate, nitrate, and iron. Averagely results show that the analyses are within the permissible limit of World Health Organization (WHO) and Nigerian Industrial Standards (NIS). From the analysisof results, observation and comparison with the available standard, it was revealed that four out the twenty hand dug wells in the research area met the WHO standard and while five met the NIS standard.