Constructed wetlands are proving to be the best natural treatment system for landfill leachates. Documentation of the experience in this use of constructed wetlands has been limited. To fill the gap, Constructed Wetlands for the Treatment of Landfill Leachates is the first compilation of the results of research from North America and Europe. Originally presented at an international symposium, this collection of papers offers the most recent findings from the leading researchers in this new and innovative natural treatment system.