EXHIBIT 21.1 SUBSIDIARIES OF WASTE CONNECTIONS, INC. Other Names State of Under Which Incorporation/ Conducts Subsidiary Organization Business - ---------- ------------ -------- AMADOR SERVICES, LLC California AMERICAN DISPOSAL COMPANY, INC. Washington AMERICAN SANITARY SERVICE, INC. Oregon ARROW SANITARY SERVICE, INC. Oregon BUTLER COUNTY LANDFILL, INC. Nebraska CAMINO REAL ENVIRONMENTAL CENTER, INC. New Mexico CITY SANITATION, INC. Utah COASTAL ROLLOFF SERVICE California COLD CANYON LANDFILL, INC. California COLUMBIA RESOURCE CO., LP Washington COMMUNITY REFUSE DISPOSAL, INC. Nebraska CORRAL DE PIEDRA LAND COMPANY California CURRY TRANSFER AND RECYCLING, INC. Oregon City Transfer & Recycling County Transfer & Recycling Country Transfer & Recycling Extra Mile Disposal & Hauling Westlane Disposal Harrell's Septic Roto-Rooter of Curry County Sandy's Disposal Service DM DISPOSAL CO., INC. Washington Superior Refuse Removal DENVER REGIONAL LANDFILL, INC. Colorado EL PASO DISPOSAL, LP Texas Caprock Waste Services Company, LLC ENVIRONMENTAL TRUST COMPANY Tennessee ENVIRONMENTAL WASTE MANAGEMENT, INC. California ENVIRONMENTAL WASTE SYSTEMS, INC. Oregon Clatskanie Sanitary Service Hudson Portable Toilet Service Hudson's Garbage Service FINLEY-BUTTES LIMITED PARTNERSHIP Oregon FINNEY COUNTY LANDFILL, INC. Delaware G&P DEVELOPMENT, INC. Nebraska ISLAND DISPOSAL, INC. Washington J BAR J LAND, INC. Nebraska KINGSBURG DISPOSAL SERVICE, INC. California LEALCO, INC. Texas ABC Waste Collection ABC Waste Disposal Other Names State of Under Which Incorporation/ Conducts Subsidiary Organization Business - ---------- ------------ -------- MADERA DISPOSAL SYSTEMS, INC. California Allied Disposal Company Bishop Waste Disposal Riverdale Disposal Service Sierra Disposal Western Johns MAMMOTH DISPOSAL COMPANY California MANAGEMENT ENVIRONMENTAL NATIONAL, INC. Washington MASON COUNTY GARBAGE CO., INC. Washington MID-STATE RECYCLING WASTE SYSTEMS, INC. Kentucky MILLENIUM WASTE INCORPORATED Indiana MISSION COUNTRY DISPOSAL California MORRO BAY GARBAGE SERVICE California MURREY'S DISPOSAL COMPANY, INC. Washington NEBRASKA ECOLOGY SYSTEMS, INC. Nebraska NOBLES COUNTY LANDFILL, INC. Minnesota NORTHERN PLAINS DISPOSAL INC. Delaware OKLAHOMA CITY WASTE DISPOSAL, INC. Oklahoma OKLAHOMA LANDFILL HOLDINGS, INC. Delaware OSAGE LANDFILL, INC. Oklahoma PIERCE COUNTY LANDFILL MANAGEMENT, INC. Delaware PIERCE COUNTY RECYCLING COMPOSTING & DISPOSAL, LLC Washington RED CARPET LANDFILL, INC. Oklahoma RH FINANCIAL CORPORATION Washington RHINO SOLID WASTE, INC. New Mexico SAN LUIS GARBAGE COMPANY California SCOTT SOLID WASTE DISPOSAL COMPANY Tennessee SOUTH COUNTY SANITARY SERVICE, INC. California SOUTHERN PLAINS DISPOSAL, INC. Delaware TACOMA RECYCLING COMPANY, INC. Washington TENNESSEE WASTE MOVERS, INC. Delaware WASCO COUNTY LANDFILL, INC. Delaware Republic Services of Oregon WASTE CONNECTIONS MANAGEMENT SERVICES, INC. Delaware WASTE CONNECTIONS OF ALABAMA, INC. Delaware WASTE CONNECTIONS OF ARIZONA, INC. Delaware WASTE CONNECTIONS OF ARKANSAS, INC. Delaware WASTE CONNECTIONS OF CALIFORNIA, INC. California WASTE CONNECTIONS OF COLORADO, INC. Delaware Denver Roll-Off Service Town & Country Disposal WASTE CONNECTIONS OF ILLINOIS, INC. Delaware Millenium Waste of Mansfield WASTE CONNECTIONS OF IOWA, INC. Iowa Huberg Solid Waste Management WASTE CONNECTIONS OF KANSAS, INC. Delaware Other Names State of Under Which Incorporation/ Conducts Subsidiary Organization Business - ---------- ------------ -------- WASTE CONNECTIONS OF KENTUCKY, INC. Delaware WASTE CONNECTIONS OF MINNESOTA, INC. Minnesota Schaap Sanitation (f/k/a Ritter's Sanitary Service, Inc.) Ulrich Sanitation L&L Sanitation WASTE CONNECTIONS OF MISSISSIPPI, INC. Delaware WASTE CONNECTIONS OF MISSOURI, INC. Delaware WASTE CONNECTIONS OF MONTANA Delaware Victor Transfer WASTE CONNECTIONS OF NEBRASKA, INC. Delaware Big Red Roll Off Central Waste Disposal J&J Sanitation Midwest Refuse Service Commercial Omega Systems Sanitation Systems Saunders County Disposal Shrader Refuse and Recycling Service Company The Garbage Company Ummel Sanitation Wahoo Sanitation WASTE CONNECTIONS OF NEW MEXICO, INC. Delaware WASTE CONNECTIONS OF OKLAHOMA, INC. Oklahoma Oklahoma Disposal (f/k/a B&B Sanitation, Inc.) & Sanitation Metropolitan Waste Services Waste Connections WASTE CONNECTIONS OF OREGON, INC. Oregon Lebanon-Sweet Home (f/k/a Sweet Home Sanitation Service, Inc.) Septic Tank Service Ace Sanicans Buck's Sanitary Service Hank's Septic Tank Service Refuse Removal Sweet Home Sanitation Service Sweet Home Transfer & Recycling Wally's Portable Restrooms Hood River Garbage Service Hood River Recycling & Transfer Station Other Names State of Under Which Incorporation/ Conducts Subsidiary Organization Business - ---------- ------------ -------- WASTE CONNECTIONS OF SOUTH DAKOTA, INC. South Dakota Cook's Wastepaper & Recycling Envirotech Waste Services Novak Enterprises WASTE CONNECTIONS OF TENNESSEE, INC. Delaware LMP Transportation Company Ocoee Environmental Services WASTE CONNECTIONS OF TEXAS, LLC Delaware WASTE CONNECTIONS OF UTAH, INC. Delaware Roche & Sons WASTE CONNECTIONS OF WASHINGTON, INC. Washington WASTE CONNECTIONS OF WYOMING, INC. Delaware WASTE CONNECTIONS TRANSPORTATION CO., INC. Oregon WASTE CONNECTIONS, INC. Delaware Amador Disposal Service Mother Lode Sani-Hut Mammoth Disposal Company Mono County Disposal WASTE SERVICES OF N.E. MISSISSIPPI, INC. Mississippi WCI ACQUISITION CORPORATION Nebraska (FEIN: 94-3345277) WCI ACQUISITION CORPORATION I Oregon (FEIN: 94-3338199) WCI OF GEORGIA Delaware Baxter Waste Systems