An organic waste processing system and method for producing a slurry for the production of bio-gas, transportation fuels and chemical products, and a residual solid. The system includes (i) a hopper configured to receive sorted organic waste having contaminants from one or more sources, (ii) a separator system in communication with the hopper and configured to receive the sorted organic waste from the hopper and to remove at least a portion of the contaminants in the sorted organic waste, (iii) a complimentary liquid tank in communication with the separator system and containing complimentary liquids, (iv) a wash water liquid tank in communication with the separator system and containing wash water, (v) a product tank in communication with the separator system and configured to receive the sorted organic waste from the separator system, (vi) a make-up product tank in communication with the separator system and configured to receive the sorted organic waste from the separator system having low COD, (vii) a anaerobic digester system configured to receive the sorted organic waste from the product tank, and (viii) a programmable logic controller.