Links

American Water Works Association
http://www.awwa.org/

Ductile Iron Research Association
http://www.dipra.org

The National Association of Pipe Fabricatros
http://napf.com

Water For People
http://www.waterforpeople.org

WASDA
http://www.wasda.com

Underwriters Laboratories Inc.
http://www.ul.com/

NSF International
http://www.nsf.org/

Amsted Industries Incorporated
http://www.amsted.com