The chemical composition of groundwater affects its suitability for domestic, agricultural and in... more The chemical composition of groundwater affects its suitability for domestic, agricultural and industrial uses. About 80% of diseases in the world and one-third of deaths in developing countries are associated with drinking of water of mediocre quality. Evaluation of groundwater in Cretaceous and Tertiary Aquifers of Northern Kebbi State (NKS) was carried out to determine its suitability for drinking and irrigation uses. Water samples were collected at random from hand-dug shallow wells. Results revealed that, TDS, EC, Mg 2+ , K + , Cl-, PO 4 3-, NO 3-and SO 4 2-concentrations do not follow the World Health Organization (WHO) and National Standard for Drinking Water Quality (NSDWQ) reference guidelines. Water samples having high TDS levels also have high Na + , Cl-and SO 4 2-levels. The order of cations and anions in the study area is thus: Na > K > Ca > Mg > Zn > Fe > Cu; and Cl > SO 4 > HCO 3 > NO 3 > PO 4 > CO 3. The hydro geochemical faeces showed groundwater in NKS fall in the class of Ca-Mg-Na-K and Mixed HCO 3-SO 4 water types. Rock weathering is the dominant mechanism controlling groundwater chemistry in NKS. Permeability indices fall in good to excellent class in most sampled points; however, Residual Sodium Carbonate levels are greater than 2.5 in most of sampling points, suggesting water which is unsuitable for irrigation use. Currents findings agree with most findings in literature. However, a comprehensive study evaluating groundwater from both shallow and deep aquifers of NKS over wider spatial and temporal scales is recommended because NKS is one of the most intensively irrigated fields in Nigeria.
The chemical composition of groundwater affects its suitability for domestic, agricultural and in... more The chemical composition of groundwater affects its suitability for domestic, agricultural and industrial uses. About 80% of diseases in the world and one-third of deaths in developing countries are associated with drinking of water of mediocre quality. Evaluation of groundwater in Cretaceous and Tertiary Aquifers of Northern Kebbi State (NKS) was carried out to determine its suitability for drinking and irrigation uses. Water samples were collected at random from hand-dug shallow wells. Results revealed that, TDS, EC, Mg 2+ , K + , Cl-, PO 4 3-, NO 3-and SO 4 2-concentrations do not follow the World Health Organization (WHO) and National Standard for Drinking Water Quality (NSDWQ) reference guidelines. Water samples having high TDS levels also have high Na + , Cl-and SO 4 2-levels. The order of cations and anions in the study area is thus: Na > K > Ca > Mg > Zn > Fe > Cu; and Cl > SO 4 > HCO 3 > NO 3 > PO 4 > CO 3. The hydro geochemical faeces showed groundwater in NKS fall in the class of Ca-Mg-Na-K and Mixed HCO 3-SO 4 water types. Rock weathering is the dominant mechanism controlling groundwater chemistry in NKS. Permeability indices fall in good to excellent class in most sampled points; however, Residual Sodium Carbonate levels are greater than 2.5 in most of sampling points, suggesting water which is unsuitable for irrigation use. Currents findings agree with most findings in literature. However, a comprehensive study evaluating groundwater from both shallow and deep aquifers of NKS over wider spatial and temporal scales is recommended because NKS is one of the most intensively irrigated fields in Nigeria.
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