Agency for Toxic Substances & Disease Registry
Alabama DEM
Alaska Department of Conservation
Alberta Agriculture Food and Rural Development
Alberta Environment
Alberta Envi. & Sustainable Res. Development
Alberta Natural Resources Conservation Board
American University of Beirut
Arizona DEQ
Arkansas DEQ
Association of Central OK Governments
Atomic Energy of Canada Ltd.
Bannock County Solid Waste Dept
Barton Springs/Edwards Aquifer Conserv. Dist.
British Columbia Ministry of Environment
British Columbia Min. of Forests, Lands & Nat. Res.
Broward County Water Management Division
Butte County Dept of Agriculture
California Department of Public Health
California Department of Toxic Substances Control
California Department of Water Resources
California EPA
California Regional Water Quality Control Board
California State Water Resources Control Board
Caribbean Industrial Research Institute (Trinidad & Tobago)
Centers for Disease Control
Central Wyoming College
CETESB Environmental Agency (Sao Paulo, Brazil)
City of Casper Solid Waste Division
City of Corpus Christi
City of Denver
City of El Paso Environmental Services
City of Eugene
City of Fort Worth
City of Indianapolis
City of Jacksonville Environmental Authority
City of Kissimmee
City of Lancaster
City of Lubbock Solid Waste Managment
City of Rochester
City of Salinas
City of San Diego
City of Santa Monica
City of San Jose Environmental Services
City of Snyder
City of Springfield
City of St. Petersburg
City of Tempe
City of Titusville Lab Services
City of Tucson
Clairmont County Water
Clark County Water Reclamation District
Collier County Pollution Control & Prevention Dept.
Colorado Department of Agriculture
Colorado Division of Reclamation, Mining & Safety
Colorado DHE
Community Redevelopment Agency of LA
Concepcion University
Connecticut DEP
Dade County DERM
Delaware DNREC
Defence Construction Canada
Defence Logistics Agency
Department of National Defence
Edwards Aquifer Authority
Environment Canada
Environment Yukon
Escambia County Utilities Authority
Federal Aviation Administration
Federal Law Enforcement Training Center
Florida DEP
Fresno County Planning and Resource Management
Fresno County Public Works
Georgia DNR
Georgia EPD
Glenn County Department of Agriculture
Gov't of Newfoundland & Labrador
Gov't of the Yukon
Guam EPA
Gulf County Solid Waste Dept
Hampton Roads Sanitation District
Harford County Dept of Public Works
Hawaii Department of Health
Hernando County, Florida
Howard County Bureau of Waste Management
Humboldt County Environmental Health
Humboldt County Hazardous Waste Unit
Idaho DEQ
Idaho Dept of Transportation
Illinois EPA
Illinois DNR
Illinois State Geological Survey
Indiana DEM
Israel Water Authority
Kansas DHE
Keene City Laboratory
Kentucky Division of Water
Kern County Waste Mgmt Dept
King County Department of Road Services
Kuwait Institute for Scientific Research
Lahontan Regional Water Quality Control Board
Lane County
Lansing Board of Water & Light
Lexington-Fayette Urban Co Govt
Louisiana DEQ
Los Angeles County Health Dept
Los Angles County Sanitation Districts
Louisiana DEQ
Lower Colorado River Authority
Lower Platte North Department of Natural Resources
Lower Platte South Department of Natural Resources
Lycoming County Resource Management
Maine DEP
Miami Conservancy District
Miami-Dade County Dept of Solid Waste Mgmt
Michigan DEQ
Michigan DNR
Michigan Department of Transportation

Middle Tennessee State University
Military Institute of Engineering
Minnesota Pollution Control Agency
Mississippi DEQ
Missouri DNR
Monroe Co Solid Waste Mgmt District
Montana DEQ
Mount Royal College
Nebraska Association of Resource Districts
Nebraska Dept of Conservation & Nat Resources
Nebraska DEQ
Nevada DEP
Nevada Dept of Conservation & Natural Resources
New Brunswick Dept of the Environment
New Hampshire DES
New Jersey DEP
New Mexico Environment Dept
New York State DEC
New York City DEP
North Carolina DENR
Northern Alberta Institute of Technology
Northern Colorado Water District
Ohio DNR
Ohio Department of Transportation
Ohio EPA
Oklahoma Corporation Commission
Oklahoma Dept of Agriculture, Food & Forestry
Oklahoma DEQ
Oklahoma Water Resources Board
Ontario Ministry of the Environment
Orange County Highway Maintenance
Orange County Public Utilities Lab
Orange Co Integrated Waste Mgmt Dept
Orange County Transportation Authority
Oregon DEQ
Palm Beach County Solid Waste Authority
Panhandle Health District
Pennsylvania DEP
Pinellas County Utilities
Polk County Utilities Administration
Portland Water Bureau
Puerto Rico Port Authority
Region of Peel
Riverside County Waste Mgmt Dept
Robert S Kerr Research Center
Royal Military College
Sacramento County
Sacramento Co Dept of Waste Mgmt & Recycling
Salinas Valley Solid Waste Authority
Sam Houston State University
San Antonio Water System
Santa Barbara County Public Works
Santa Clara Valley Water District
Sarasota County Government
Sarasota County Natural Resources Dept
Seminole Co Petroleum Storage Tanks Div
Solid Waste Authority of Central Ohio
South Carolina DHEC
South Dakota Geological Survey
South Florida Water Management District
Southwest Florida Water Mgmt District
Spokane County Utilities
St. Johns County Utilities
St. Johns River Water Mgmt District
Sublette County Conservation District
Tennessee Valley Authority
Texas Commission on Environmental Quality
Texas Railroad Commission
Texas Water Development Board
Transport Canada
Tulare County Resource Mgmt Agency
United Water Conservation District
Universidad Ricardo Palma (Puerto Rico)
University of Connecticut - ERI
University of Virginia
U.S. Air Force
U.S. Army Corps of Engineers
U.S. Army Environmental Command
U.S. Bureau of Indian Affairs
U.S. Bureau of Land Management
U.S. Bureau of Mines
U.S. Bureau of Reclamation
U.S. Coast Guard Civil Engineering Unit
U.S. Department of Agriculture
U.S. Department of Energy
U.S. Department of the Interior
U.S. EPA, Office of Solid Waste
U.S. EPA, Office of USTs
U.S. EPA, Regions 1, 2, 3, 4, 5, 7, 8, 10
U.S. Forest Service
U.S. Geological Survey
U.S. Fish and Wildlife Service
U.S. National Park Service
U.S. Navy
U.S. Nuclear Regulatory Commission
U.S. Office of Surface Mining
Vanderbuilt University
Washington Dept of Ecology
Washoe County Dept of Water Resources
Washoe County Health Department
Water Authority of the Cayman Islands
Water Replenishment Dist of S California
West Virginia DEP
West Virginia Dept of Transportation
West Virginia Div of Highways
Wisconsin DNR
Wyoming DEQ