How to pronounce “leeches”(verb) in English

mines where the tailings have been laying out at the surface and they're exposed to weather and then you get leakage of every element in the periodictable that was in that coal mining then leeches into aquifers that's a different kind of water problem which is notconsuming it or heating it which is what we do in thermal power plants is the contamination of it and then air I think