American Gas Association http://www.aga.org/ Clearinghouse for gas energy information. Site contains a listing of advocacy issues, publications, industry codes and standards, conferences and workshops, and links to other natural gas-related sites.

American Public Power Association (APPA) http://www.appanet.org/ Organization dedicated to serving publicly owned electric utilities.  Safety videos, a manual, and other publications are available for purchase.

American Water Works Association http://www.awwa.org/ Links to water utility sites, a small utility network for rural communities, information on legislative and federal regulations on drinking water, Water Wiser (a water efficiency clearinghouse) and other water related websites.

National Association of Clean Water Agencies http://www.nacwa.org Provides information on regulations and legislation for wastewater utility professionals. Also has a bookstore, including a free tool for analyzing vulnerability to disasters and threats.

North American Electric Reliability Council (NERC) http://www.nerc.com/ Provides information on NERC committees and regional councils, planning standards, NERC operating manual, compliance programs, and links to utility, electric and nuclear sites.

US Department of Transportation Pipeline and Hazardous Materials Safety Administration http://www.phmsa.dot.gov/pipeline Safety information for natural gas industry, including issues such as risk management, operator qualification, and other federal laws.

Public Utility Commission of Texas http://www.puc.state.tx.us/ Information on rules and laws for electric and telecommunications, utility publications, consumer protection information, utility implemented legislative bills, and links to other government and utility sites.

Southern Gas Association http://www.southerngas.org A source of training and development programs for natural gas utilities.

Texas Engineering Extension Service http://teexweb.tamu.edu/ http://www.teex.com TEEX provides education and training on water and wastewater certification, electric utility safety, work zone traffic control, along with law enforcement and firefighter training.

Texas Gas Association http://www.texasgas.com/ Promotes education through various workshops and training sessions for the Texas Gas Industry. The site also provides links to several gas industry related sites.

Texas Railroad Commission – Pipeline Safety www.rrc.state.tx.us/safety/ Information on the Pipeline Safety Division, which oversees safety regulation of gas utilities in Texas. Includes links to pipeline safety rules.

Transportation Safety Institute - Federal Department of Transportation http://www.tsi.dot.gov/ This agency provides information on traffic safety.pipeline safety, including publications and a guidance manual for operators of small natural gas systems.

Texas Water Utilities Association http://www.twua.org The TWUA offers publications and training for water utility personnel.

Water Environment Federation http://www.wef.org/ Information on wastewater treatment and water quality. Conferences and workshops on water trends and technology. Federal water regulations and legislation, periodicals, magazines, newletters, and links to the Water Environment Research Foundation.