American Academy of Environmental Engineers
130 Holiday Court, Suite 100
Annapolis, MD 21401
410-266-3311
Website: www.aaee.net

American Consulting Engineers Council
1015 15th Steet, N.W.
Washington, DC 20005
202-347-7474
Website: www.acec.org

American Public Works Association
2345 Grand Boulevard, Suite. 500
Kansas City, MO 64180-2625
816-472-6100
Website: www.apwa.net

American Society of Civil Engineers
180 Alexander Bell Drive
Reston, VA 20191-4400
703-295-6000
Website: www.asce.org

American Society of Testing Materials
100 Barr Harbor Drive
West Conshohocken, PA 19428
610-832-9500
Website: www.astm.org

American Traffic Safety Services Association
15 Riverside Parkway, Suite 100
Fredericksburg, VA 22406-1022
800-272-8772
Website: www.atssa.com

American Underground Construction Association
511 11th Avenue. South
Minneapolis, MN 55415
612-339-5403
Website: www.auca.org

American Water Works Association
6666 W. Quincy Avenue
Denver, CO 80235
303-794-7711
Website: www.awwa.org

Association for Iron & Steel Technology
186 Thorn Hill Road
Warrendale, PA 15086
724-776-6040
Website: www.aist.org

Environmental Protection Agency
Ariel Rios Building
1200 Pennsylvania Ave., N.W.
Mail Code 3212A
Washington, DC 20460
202-260-2090
Website: www.epa.org

International Association of Concrete Repair Specialists
P. O. Box 17402
Dulles International Airport
Washington, DC 20041
703-450-0116
Website: www.icri.org

National Association of Sewer Service Companies
140 Circle Drive, Suite 103
Maitland, FL 32751
407-740-6634
Website: www.nassco.org

National Association of Water Companies
1725 K Street, N.W., Suite 103
Washington, DC 20006
202-833-8383
Website: www.nawc.com

National League of Cities
1301 Pennsylvania Avenue, N.W.
Washington, DC 20004
202-626-3000
Website: www.nlc.org

National Society of Professional Engineers
1420 King Street
Alexandria, VA 22314-2715
703-684-2800
Website: www.nspe.org

National Utility Contractor's Association
4301 N. Fairfax Drive, Suite 360
Arlington, VA 22203
703-358-9300
Website: www.nuca.com

North American Society for Trenchless Technology
1655 N. Ft. Myer Drive, Suite 700
Arlington, VA 22209
703-351-5252
Website: www.nastt.org

SSPC The Society of Protective Coatings
40 24th Street
Pittsburgh, PA 15222-4656
877-281-7772
Website: www.sspc.org

Water Environment Federation
601 Wythe Street
Alexandria, VA 22314-1994
703-684-2400
Website: www.wef.org