Landfill leachate with arsenic (As) contamination poses a threat to Florida aquifer because of the nature of the geology of the State. Florida sits directly on limestone which also hosts the main Florida aquifers. But the underlying rock and/or soil dissolve(s) away when the environmental pH becomes acidic. This results in sinkhole formations and is of a great concern especially, in areas of landfill locations. There is a potential of leakage of the leachate from the landfill into the aquifers threatening the quality and safety of the groundwater. In the United States, Class I landfills...