Rela？？es entre condutividade hidráulica, transmissividade, condutancia longitudinal e sólidos totais dissolvidos para o aquífero livre de Ca？apava do Sul (RS), Brasil

groundwater is an important resource for the public supply, mainly for the attendance of peripheral communities in large cities or small cities, where the installation or prolongation of distribution systems is economically unfeasible. studies related to the vulnerability analysis in aquifers are important for subsiding public policies in basic sanitation and environmental preservation. this study was supported by the cadaster of 23 shallow wells localized in ca？apava do sul (rs). measurements of electric resistivity and chargeability were performed by geophysical methods, direct measures of hydraulic conductivity and total dissolved solids. the data statistics analysis demonstrated several degrees among parameters, conditioned to geological factors as porosity, permeability and total dissolved solids.