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The problem with organic waste is very common nowadays, recyclable actions and reductions are physic and chemical process which are expensive. Having vermicompost techniques has a reduction of production and is friendly whit the air. The earthworms work with the organic matter and make a product which is call “Vemicompostâ€. The vermicompost is the result of organic matter and sewage sludge. When the sewage sludge works with the vermicompost technique helps the product in nutriments, organic matter stabilization and soil improvation. References show the importance in using different organic waste for reincorporation to the environment. Parameters for preparing a vermicompost are pH, temperature, moisture total solid nitrogen, carbon, relation C/N and humid acids. The importance of this text is based in the necessity of using vermicompost amendments with the sewage sludge. This could be use as manure for the plant development and is an alternative in soils agricultural. It might be a solution and final disposition. On the other hand the earthworm has a participation bioaccumulation heavy metals and reducing toxicity levels in the environment. This organism is considerate an agent which can bioaccumulation metals from the environment.Â

Se determinó el índice degeoacumulación regional (Igeo) y el factor deenriquecimiento (EF) en suelos irrigados de lacuenca alta del río Lerma, Estado de México.Se colectaron 55 muestras de suelo de cincolocalidades: Tlachaloya, Ixtlahuaca,Atlacomulco, Temascalcingo y Amealco. Laspropiedades químicas analizadas fueron pH,capacidad de intercambio catiónico, arcilla,materia orgánica, concentración de Cr, Cu, Cd,Ni, Zn, y Pb; así como el Igeo y FE. Los suelosse consideraron excelentes para su usoagrícola en cuanto a los valores de pH ymateria orgánica (MO). Las concentraciones demetales pesados se encontraron por debajo delos límites permisibles. De acuerdo con elfactor de enriquecimiento, el Pb se considerócomo un contaminante moderado con unorigen tanto geológico como antropogénico.El índice de geocumulación mostró que el Pby el Ni son los mayores contaminantes del suelo.