MunicipallandfillAccidentalspillage
LeachateLeakingseptictankAgriculturalleachate(pesticides,fertilizers)De-icingchemicals,oilsWater table AquiferIndustriallandfillleachateAbandonedoil wellLeakingpetroleumtankBrine leakagefrom rupturedwell casingFig. 5.16Typical anthropogenic mechanisms of groundwater contamination.