<Page> EXHIBIT 21.1 IESI CORPORATION LIST OF SUBSIDIARIES <Table> <Caption> NAME STATE OF INCORPORATION - ---- ---------------------- AMD, Inc. Oklahoma Centerpoint Disposal, Inc. Oklahoma Central Louisiana Waste, L.L.C. Louisiana Enviroclean Systems, Inc. Mississippi Ervin's Trash Service, Inc. Oklahoma Grand Lake Sanitation, Inc. Oklahoma IESI AR Corporation Arkansas IESI AR Landfill Corporation Arkansas IESI DE Corporation Delaware IESI DE LP Corporation Delaware IESI LA Corporation Delaware IESI LA Landfill Corporation Delaware IESI MO Corporation Missouri IESI NJ Corporation Delaware IESI NJ Recycling Corporation Delaware IESI NY Corporation Delaware IESI OK Corporation Oklahoma IESI PA Bethlehem Landfill Corporation Delaware IESI PA Blue Ridge Landfill Corporation Pennsylvania IESI PA Corporation Delaware IESI TX Corporation Texas IESI TX GP Corporation Delaware IESI TX Landfill LP Texas Total Waste Systems, Inc. Oklahoma TWS, Inc. Oklahoma TWS of Caddo County, Inc. Oklahoma TWS of Southwestern Oklahoma, Inc. Oklahoma </Table>