General definition >"Leachate is the term used for any liquid produced by the action of leaching which occurs when water percolates through any permeable material." >"Leachate is the liquid that drains or 'leaches'from a landfill;it varies widely in composition regarding the age of the landfill and the type of waste that it contains.It usually contains both dissolved and suspended material." “Leachate is the term used for any liquid produced by the action of leaching which occurs when water percolates through any permeable material.”  “Leachate is the liquid that drains or ‘leaches’ from a landfill; it varies widely in composition regarding the age of the landfill and the type of waste that it contains. It usually contains both dissolved and suspended material.” General definition