EXHIBIT 21.1

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
ADVANCED SYSTEMS PORTABLE RESTROOMS, INC.	Oregon	Advanced Mobile Storage
		Advanced Systems Portable Restrooms
		McDonald Portable
		Toilets
ALASKA WASTE-INTERIOR, LLC	Alaska
ALASKA WASTE-KENAI PENINSULA, LLC	Alaska
ALASKA WASTE MAT-SU, LLC	Alaska
AMERICAN DISPOSAL COMPANY, INC.	Washington	Vashon Disposal
AMERICAN SANITARY SERVICE, INC.	Oregon
ANDERSON COUNTY LANDFILL, INC.	Delaware	Anderson County Landfill
ANDERSON REGIONAL LANDFILL, LLC	Delaware
BITUMINOUS RESOURCES, INC.	Kentucky	Hopkins County Regional
		Landfill
BRENT RUN LANDFILL, INC.	Delaware	Brent Run Landfill
BROADACRE LANDFILL, INC.	Colorado	Pueblo Landfill and
		Recycling Center
BUTLER COUNTY LANDFILL, INC.	Nebraska
CALPET, LLC	Wyoming
CAMINO REAL ENVIRONMENTAL CENTER, INC.	New Mexico
CAPITAL REGION LANDFILLS, INC.	New York
CARPENTER WASTE HOLDINGS, LLC	New York	Carpenter Waste
		Carpenter Waste Removal
CHAMBERS DEVELOPMENT OF NORTH CAROLINA, INC.	North Carolina	Anson County Landfill
CHIQUITA CANYON, INC.	Delaware
CHIQUITA CANYON, LLC	Delaware	Chiquita Canyon Landfill
CLIFTON ORGANICS, LLC	New York
COLD CANYON LANDFILL, INC.	California	Cold Canyon Processing
		Facility
COLUMBIA RESOURCE CO., L.P.	Washington
COMMUNITY REFUSE DISPOSAL, INC.	Nebraska
CONTRACTORS WASTE SERVICES, INC.	Kentucky
CORRAL DE PIEDRA LAND COMPANY	California
COUNTY WASTE — ULSTER, LLC	New York
COUNTY WASTE AND RECYCLING SERVICE, INC.	New York	Ace Carting
		County Waste
		MRI Rubbish
		Murphy’s Disposal
		Superior Waste
COUNTY WASTE TRANSFER CORP.	New York	Troy Transfer
		Troy Transfer Station
CRI HOLDINGS, LLC	Delaware
CURRY TRANSFER AND RECYCLING, INC.	Oregon	City Transfer & Recycling
		County Transfer
		& Recycling
		Country Transfer
		& Recycling
		Extra Mile Disposal
		& Hauling
		Harrell’s Septic
		Roto-Rooter of Curry County
		Westlane Disposal
D.M. DISPOSAL CO., INC.	Washington	American Portable Storage
		D.M. Recycling
		Superior Refuse Removal
DELTA CONTRACTS, LLC	Delaware
DENVER REGIONAL LANDFILL, INC.	Colorado
DIVERSIFIED BUILDINGS, L.L.C.	Kansas
ECOSORT, L.L.C.	Oregon
EL PASO DISPOSAL, LP	Texas	El Paso Disposal
ELKO SANITATION COMPANY	Nevada	Waste Connections of
		Nevada
EMPIRE DISPOSAL, INC.	Washington
ENTECH ALASKA, LLC	Alaska
ENVIRONMENTAL TRUST COMPANY	Tennessee
EVERGREEN DISPOSAL, INC.	Montana	Glacier Disposal
FORT ANN TRANSFER STATION, LLC	New York
FINLEY-BUTTES LIMITED PARTNERSHIP	Oregon	Finley Buttes Landfill
		Company
FINNEY COUNTY LANDFILL, INC.	Delaware
FRONT RANGE LANDFILL, INC.	Delaware	Front Range Landfill
G&P DEVELOPMENT, INC.	Nebraska
GREEN WASTE SOLUTIONS OF ALASKA, LLC	Alaska
HARDIN SANITATION, INC.	Idaho
HAROLD LEMAY ENTERPRISES, INCORPORATED	Washington	AA Better Trash & Junk
		Clean Up
		Aberdeen Sanitation Co.
		Butler’s Cove Refuse
		Service

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
		City Sanitary Co.
		Eastern Grays Harbor
		Disposal
		EGH Disposal
		Harbor Disposal Co.
		Harold LeMay Enterprises
		Joes Refuse Service
		Lakewood Recycling
		Service
		Lakewood Refuse Service
		LeMay Inc
		LeMay Mobile Shredding
		LeMay Transportation
		Services
		Pacific Disposal
		Pierce County Refuse
		Recycle Services
		Rural Garbage Service
		White Pass Garbage
HIGH DESERT SOLID WASTE FACILITY, INC.	New Mexico
HUDSON VALLEY WASTE HOLDING, INC.	Delaware
ISLAND DISPOSAL, INC.	Washington	Whidbey Recycling
		Services
J BAR J LAND, INC.	Nebraska
LACASSINE HOLDINGS, L.L.C.	Louisiana
LAKESHORE DISPOSAL, INC.	Idaho
LAUREL RIDGE LANDFILL, L.L.C.	Delaware
LEALCO, INC.	Texas	ABC Waste Collection
		Waste Connections of Texas
		Waste Connections of Texas Rio Grande Valley
LFC, INC.	Delaware
MADERA DISPOSAL SYSTEMS, INC.	California	Allied Disposal Company
		Avenal Landfill
		Bishop Waste Disposal
		Coastal Rolloff Service
		Riverdale Disposal Service
		Sierra Disposal
		Western Johns
MAMMOTH DISPOSAL COMPANY	California
MANAGEMENT ENVIRONMENTAL NATIONAL, INC.	Washington
MASON COUNTY GARBAGE CO., INC.	Washington
MBO, LLC	Delaware	Lacassine Oilfield Services
MDSI OF LA, INC.	California
MILLENIUM WASTE INCORPORATED	Indiana	Quad Cities Landfill
MISSION COUNTRY DISPOSAL	California
MORRO BAY GARBAGE SERVICE	California
MURREY’S DISPOSAL COMPANY, INC.	Washington	Olympic Disposal
NEBRASKA ECOLOGY SYSTEMS, INC.	Nebraska
NOBLES COUNTY LANDFILL, INC.	Minnesota
NORTHWEST CONTAINER SERVICES, INC.	Oregon
OKLAHOMA CITY WASTE DISPOSAL, INC.	Oklahoma
OKLAHOMA LANDFILL HOLDINGS, INC.	Delaware
OSAGE LANDFILL, INC.	Oklahoma
PIERCE COUNTY RECYCLING COMPOSTING AND DISPOSAL, LLC	Washington	LRI
POTRERO HILLS LANDFILL, INC.	California	Potrero Hills Landfill
PRAIRIE DISPOSAL LLC	North Dakota
PRAIRIE LIQUIDS, LLC	Delaware
PSI ENVIRONMENTAL SERVICES INC.	Indiana	PSI WASTE
PSI ENVIRONMENTAL SYSTEMS, INC.	Indiana	PSI WASTE
R360 ARTESIA, LLC	Delaware
R360 CLACO, LLC	Delaware
R360 ENVIRONMENTAL SOLUTIONS, LLC	Delaware
R360 ES HOLDINGS, INC.	Delaware
R360 HITCHCOCK, LLC	Delaware
R360 LOGISTICS, LLC	Delaware
R360 OKLAHOMA, LLC	Delaware
R360 PERMIAN BASIN, LLC	New Mexico
R360 SHUTE CREEK, LLC	Delaware
R360 SILO, LLC	Delaware
R360 WILLISTON BASIN, LLC	Delaware
R.A. BROWNRIGG INVESTMENTS, INC.	Oregon	Cascade Disposal Company
		Cascade Recycling Co.
		Kelvic Disposal Co.
		Kelvic Dropbox Company
		Sun Country Disposal
RAILROAD AVENUE DISPOSAL, LLC	Delaware
RED CARPET LANDFILL, INC.	Oklahoma

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
RH FINANCIAL CORPORATION	Washington
RICH VALLEY, LLC	Minnesota
R.J.C. TRUCKING CO.	Oregon	Eugene Drop Box
RKS HOLDING, CORP.	New York
SANIPAC, INC.	Oregon
SAN LUIS GARBAGE COMPANY	California
SCOTT SOLID WASTE DISPOSAL COMPANY	Tennessee	Reliable Waste Services
		Volunteer Landfill
SCOTT WASTE SERVICES, LLC	Kentucky
SEABREEZE RECOVERY, INC.	Delaware	Seabreeze Environmental
		Seabreeze Environmental
		Landfill
SEDALIA LAND COMPANY	Colorado
SIERRA HOLDING GROUP, LLC	New York
SIERRA PROCESSING, LLC	New York
SILVER SPRINGS ORGANICS L.L.C.	Washington
SKB (AUSTIN) ENVIRONMENTAL, LLC	Minnesota
SKB ENVIRONMENTAL, INC.	Minnesota
SKB RECYCLING, LLC	Minnesota
SOUTH COUNTY SANITARY SERVICE, INC.	California
STERLING AVENUE PROPERTIES, LLC	New York
STUTZMAN REFUSE DISPOSAL, INC.	Kansas
TACOMA RECYCLING COMPANY, INC.	Washington
TENNESSEE WASTE MOVERS, INC.	Delaware	TWM-Landfill
US LIQUIDS OF LA., L.P.	Delaware
VOORHEES SANITATION, L.L.C.	Idaho
WASCO COUNTY LANDFILL, INC.	Delaware
WASTE CONNECTIONS MANAGEMENT SERVICES, INC.	Delaware
WASTE CONNECTIONS OF ALABAMA, INC.	Delaware	Competitive Waste Systems
WASTE CONNECTIONS OF ALASKA, INC.	Delaware	Alaska Green Waste Solutions
		Alaska Pacific Environmental
		Services Anchorage
		Alaska Waste
		Alaska Waste—Anchorage
		Alaska Waste Transfer
		Anchorage Refuse
		Commercial Refuse
		Eagle River Refuse
		Green Waste
		Kodiak Sanitation
		Peninsula Sanitation
		Valley Refuse
		Wasilla Refuse
WASTE CONNECTIONS OF ARIZONA, INC.	Delaware
WASTE CONNECTIONS OF ARKANSAS, INC.	Delaware
WASTE CONNECTIONS OF CALIFORNIA, INC.	California	Amador Disposal Service
		Bear Valley Disposal Service
		Betts Disposal Service
		Calaveras Sanitation Services
		Ebbetts Pass Disposal Service
		El Dorado Disposal Service
		GreenTeam
		GreenTeam of San Jose
		GreenWaste of Tehama
		GT Waste
		Mother Lode Sani-Hut
		Rent-A-Bin
		Sani-Hut Portable Toilets
		SEI Debris Box
		SEI Solid Waste
		Western El Dorado Recovery Systems
		Westside Sanitation
WASTE CONNECTIONS OF CANADA HOLDINGS, INC.	Delaware
WASTE CONNECTIONS OF COLORADO, INC.	Delaware	All Trash Service
		Aspen Waste
		Aspen Waste Systems
		Community Recycling
		Denver Roll-Off Service
		Diamond Disposal
		Eagle Waste & Recycling Service

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
		Eagle Waste Services
		Eagle Waste Services, Inc.
		Eagle Roll-Off, Inc.
		El Paso Disposal Services
		Fremont Disposal
		Horizon Property Management
		Platte Valley Disposal
		Pueblo Disposal
		Pueblo Disposal & Recycling Service
		Snowy Peaks Trash Company
		Solid Waste Transfer Services
		Southside Landfill
		The Trash Company
		Town & Country Disposal
		U.S. Disposal
		U.S. Disposal Services
WASTE CONNECTIONS OF GEORGIA, INC.	Delaware	Baxter Waste Systems
WASTE CONNECTIONS OF IDAHO, INC.	Indiana	Mountain Jack Environmental Services
		T, T & R Enterprises
		Valley Waste and Recycling
WASTE CONNECTIONS OF ILLINOIS, INC.	Delaware	Millenium Waste
WASTE CONNECTIONS OF IOWA, INC.	Iowa	EZ Roll Off
		EZ Roll Off Systems
		E-Z Sanitation
		Frangenberg Sanitation
		Huberg Solid Waste Management
		Millenium Waste
		Stone Roll-Off
		Stone Sanitation
		Town & Country Disposal
		Whaley Waste Systems
WASTE CONNECTIONS OF KANSAS, INC.	Delaware	Anderson Trash Service
		Best Yet Refuse
		Collectia LTD.
		Dual County Sanitation
		Northend Disposal
		Plumb Thicket Landfill
		R-Arrow
		Salina Waste Systems
WASTE CONNECTIONS OF KENTUCKY, INC.	Delaware	Corbin’s Disposal Service
		Kentucky Waste Systems, Inc.
		Mid-State Recycling Waste Disposal
		Mid-State Recycling Waste Systems
		Mid-State Waste Waste Systems, Inc.
WASTE CONNECTIONS OF LEFLORE, LLC	Mississippi
WASTE CONNECTIONS OF LOUISIANA, INC.	Delaware	Delta Disposals
		Diamond Disposal
		Good Neighbor Disposal
WASTE CONNECTIONS OF MINNESOTA, INC.	Minnesota	Hendrickson Sanitation
		L & L Sanitation
		Schaap Sanitation
		Scotting Sanitation
		Ulrich Sanitation
WASTE CONNECTIONS OF MISSISSIPPI DISPOSAL SERVICES, LLC	Mississippi
WASTE CONNECTIONS OF MISSISSIPPI, INC.	Delaware	Asco Sanitation
		Best Waste & Recycling
		Best Waste and Recycling
		Buck Run Landfill
		Northeast Mississippi Regional Landfill
		Oxford Waste Services
WASTE CONNECTIONS OF MONTANA, INC.	Delaware	Bitterroot Disposal
		Valley Recycling
		Victor Transfer
WASTE CONNECTIONS OF NEBRASKA, INC.	Delaware	Allied Refuse Countryside Services
		Art’s Garbage Service
		B&B Sanitary Service
		Big Red Roll Off

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
		Central Waste Disposal
		Community Refuse
		Countryside Services
		Duren Sanitation
		J&J Sanitation
		Junk in the Box
		Midwest Refuse Service Commercial
		Omega Systems
		Papillion Sanitation
		River City Recycling
		Sanitation Systems
		Saunders County Disposal
		Schaben Sanitation
		SGS Sanitation
		Shrader Refuse and Recycling Service Company
		Steve’s Sanitation
		Steve’s Sanitation Service
		The Garbage Company
		Ummel Sanitation
		Wahoo Sanitation
		White Sanitation
WASTE CONNECTIONS OF NEW MEXICO, INC.	Delaware	Silva Sanitation
		Southwest Disposal
WASTE CONNECTIONS OF NORTH CAROLINA, INC.	Delaware	Queen City Transfer Station
		Waste Connections of the Carolinas
WASTE CONNECTIONS OF OKLAHOMA, INC.	Oklahoma	Metropolitan Waste Services
		Oklahoma Disposal & Sanitation
		Waste Connections
WASTE CONNECTIONS OF OREGON, INC.	Oregon	Arrow Sanitary Service
		Babe’s Garbage Service
		Bandon Disposal & Recycling
		Clatskanie Sanitary Service
		EWSI
		Environmental Waste Systems
		Hood River Garbage Service
		Hood River Recycling
		& Transfer Station
		Hudson Portable Toilet Service
		Hudson’s Garbage Service
		Jack Fleming Sanitary Service
		Les’ County Sanitary
		Les’ Sanitary Service
		North Bend Sanitation Service
		Oregon Paper Fiber
		Public Disposal and
		Recyling Center
		Refuse Removal
		Sweet Home Sanitation Service
		Sweet Home Transfer & Recycling
		The Dalles Disposal
		The Dalles Transfer Station
		Wally’s Portable Restrooms
WASTE CONNECTIONS OF SOUTH CAROLINA, INC.	Delaware	Waste Connections of the Carolinas
WASTE CONNECTIONS OF SOUTH DAKOTA, INC.	South Dakota	A & C Keiffer Sanitation
		Art’s Garbage Service
		Cook’s Wastepaper & Recycling
		Dakota Data Shred
		Envirotech Waste Services
		Kieffer Sanitation
		Novak Enterprises

SUBSIDIARIES OF WASTE CONNECTIONS, INC.

Subsidiary	State of Incorporation/ Organization	Other Names Under Which Conducts Business
		Novak Sanitary Service
		Pierre Recycling Center
		Ron’s Dray
		Sioux Valley Sanitation Service
		Steve’s Garbage Service
		Van Zee Sanitary Service
		Walker Refuse
WASTE CONNECTIONS OF TENNESSEE, INC.	Delaware	Asco Sanitation
		Clarksville Disposal
		Cumberland Waste
		Cumberland Waste Disposal
		LMP Transportation Company
		Ocoee Environmental Services
		Scott Solid Waste
		Snelson’s Trash Service
		Southern Disposal
WASTE CONNECTIONS OF TEXAS, LLC	Delaware	Hardy Road Transfer Station
		Waste Connections of Texas
		West Texas Disposal
WASTE CONNECTIONS OF THE CENTRAL VALLEY, INC.	California	Environmental Waste Management
		Kingsburg Disposal Service
WASTE CONNECTIONS OF UTAH, INC.	Delaware	City Sanitation
		Roche & Sons
WASTE CONNECTIONS OF WASHINGTON, INC.	Washington	Buchmann Sanitation Service
		Empire Disposal Hauling
		Lakeside Disposal &
		Recycling Company
		The Disposal Group
		Triangle Resources
		Twin City Sanitary Service
		Vancouver Sanitary Service
WASTE CONNECTIONS OF WYOMING, INC.	Delaware	American Disposal
		American Disposal, Inc.
		BW Waste
		Edwal Services
		Green River Valley Refuse
WASTE CONNECTIONS TRANSPORTATION COMPANY, INC.	Oregon
WASTE REDUCTION SERVICES, L.L.C.	Oregon
WASTE SERVICES OF N.E. MISSISSIPPI, INC.	Mississippi
WASTE SOLUTIONS GROUP OF SAN BENITO, LLC	Delaware
WCI HOLDINGS CO., INC.	Delaware
WCI-WHITE OAKS LANDFILL, INC.	Delaware	White Oaks Landfill
WEST BANK ENVIRONMENTAL SERVICES, INC	Indiana	Jackson Hole Environmental Systems, Inc.
		Westbank Sanitation
WEST COAST RECYCLING AND TRANSFER, INC.	Oregon	Public Disposal and
		Recycling Center
		Store-It
WEST VALLEY COLLECTION & RECYCLING, LLC	California
WYOMING ENVIRONMENTAL SERVICES, INC.	Indiana	Wyoming Waste Systems
YAKIMA WASTE SYSTEMS, INC.	Washington