Leachate usually includes toxic organic and inorganic pollutants, heavy metals, ammonia nitrogen compounds, and other dissolved and suspended contaminants. Careful management of landfill leachate (LFL) is essential to reduce leachate quantity and prevent the unfortunate fate of leachate contamination. In contrast to the management of solid waste incinerators, LFL disposal has serious ecol. and health impacts in most developing countries, mainly associated with groundwater, soil, and air pollution. This could be attributed to the absence of cost-effective treatment technol. or ideal disposal guidelines by the cities/municipalities. Therefore, ecol. evaluation and sustainable managing of LFL collection and disposal treatment are highly recommended. This review describes the classification and composition of leachates, the factors affecting leachate production, and the conventional (current) treatment options for LFLs. Procedures of aerobic and anaerobic biol. treatment employing microbial operated sep. or in combination along with physiochem. management processes are also discussed. This review examines the prospects of LFL treatment methods/techniques, how to economize LFL treatment methods (e.g., waste pretreatment) using readiness level technol., and recycling sorting technol.