The impact of soil physical and chemical properties on groundwater quality and quantity parametersin villages of Mallard County, Tehran Province
Mallard city has two aquifers comprising Tehran-Karaj and Ghate-Chahar that providing most of drinking water for villages of this City. Accordingly, there is a dire need to investigate quality and quantity of groundwater in this area. The aim of this study is to survey the impact of soil physical and chemical properties on quality and quantity of Mallard groundwater. in view of this data from thirty-one drinking water wells during a 6-year period were used. the soil physical e.g. soil texture, uniformity coefficient, curvature factor, permeability coefficient, saturation percentage, effective porosity percentage and chemical including electrical conductivity level, sodium, potassium, calcium carbonate, total dissolved solids, pH and dissolved salt percentage properties were measured in seventeen soil samples. the results showed that in eastern areas due to loamy-clay texture of the soil and suitability of permeability coefficient and saturation percent rate the discharge of the wells is better in comparison to other areas. Qualitative parameters of the soil such as Calcium Carbonate, Electrical Conductivity, Total dissolved solids, Sodium, Potassium have strong Positive correlation with Qualitative parameters of groundwater in alluvial Terraces. In agricultural and residential areas, the of nitrate concentration in drinking water have relatively strong positive correlation with soil EC, TDS and dissolved Salt.
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